Komatsu Utility SK815-5 Shop Manual
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Komatsu Utility SK815-5 Shop Manual

Skid-steer loader, serial number 37af00004/37bf00006/37btf00003 and up
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Summary of Contents for Komatsu Utility SK815-5

  • Page 1 WEBM005500...
  • Page 3 WEBM005500 SK714-5 SK815-5 SK815-5 turbo 00-1...
  • Page 4 CONTENTS CONTENTS Page 10 STRUCTURE AND FUNCTION ..................10-1 20 TESTING AND ADJUSTING ..................... 20-1 30 DISASSEMBLY AND ASSEMBLY .................. 30-1 40 MAINTENANCE STANDARD ................... 40-1 00-2 SK714-5 SK815-5 SK815-5 turbo...
  • Page 5 10-10 10-51 10-92 20-26 30-27 10-11 10-52 10-93 20-27 30-28 10-12 10-53 10-94 20-28 30-29 10-13 10-54 10-95 20-29 30-30 10-14 10-55 10-96 20-30 30-31 10-15 10-56 10-97 20-31 30-32 10-16 10-57 10-98 20-32 30-33 SK714-5 SK815-5 SK815-5 turbo 00-2-1...
  • Page 6 30-50 30-51 30-52 30-53 30-54 30-55 30-56 30-57 30-58 30-59 30-60 30-61 30-62 40-1 40-2 40-3 40-4 40-5 40-6 40-7 40-8 40-9 40-10 40-11 40-12 40-13 40-14 40-15 40-16 40-17 40-18 40-19 40-20 40-21 40-22 00-2-2 SK714-5 SK815-5 SK815-5 turbo...
  • Page 7 Proper service and repair is extremely important for the safe operation of your machine. The service and repair techniques recommended by Komatsu Utility and describe in this manual are both ef- fective and safe methods of operation. Some of these operations require the use of tools specially designed by Komatsu Utility for the purpose.
  • Page 8 Fuel or oil on the floor can cause you to slip, or can even start fires. 18. As a general rule, do not use gasoline to wash parts. In particular, use only the minimum of gasoline when washing electrical parts. 00-4 SK714-5 SK815-5 SK815-5 turbo...

  • Page 9: Testing And Adjusting

    This section gives the judgement standards when inspecting disassembled parts. NOTE The specifications contained in this shop manual are subject to change at any time and without any no- tice. Contact your Komatsu Utility distributor for the latest information. SK714-5 SK815-5 SK815-5 turbo 00-5...
  • Page 10 Symbol Item Remarks DISTRIBUTION AND UPDATING Any additions, amendments or other changes will be Special safety precautions sent to Komatsu Utility distributors. are necessary when performing the work. Get the most up-to-date information before you start any work. Safety Extra special safety precautions...
  • Page 11 Sling wire ropes from the middle portion of the hook. Slinging near the edge of the hook may cause the rope to slip off the hook during hoist in g, and a se- rious accident can result. 00-7 SK714-5 SK815-5 SK815-5 turbo...
  • Page 12 ± 45 ± 450 ---- 2900 4050 This torque table does not apply to bolts or nuts which have to fasten nylon or other parts non-ferrous metal washer. Nm (newton meter): 1 Nm = 0.102 kgm 00-8 SK714-5 SK815-5 SK815-5 turbo...
  • Page 13 11/16” - 16 3.4–3.9 33–38 13/16” - 16 5.2–5.8 51–57 1” - 14 8.2–9.2 80–90 1.3/16 - 12 12.2–13.3 120–130 1.7/16 - 12 15.3–17.3 150–170 1.11/16 - 12 18.4–20.4 180–200 2” - 12 20.4–24.4 200–240 00-9 SK714-5 SK815-5 SK815-5 turbo...
  • Page 14 COATING MATERIALS COATING MATERIALS The recommended coating materials prescribed in Komatsu Utility Shop Manuals are listed below: Nomenclature Code Applications Bostik 99 Used to apply rubber pads, rubber gaskets and cork plugs. Used to apply resin, rubber, metallic and non-metallic parts when a fast, strong Loctite 406 seal is needed.
  • Page 15 Violet–Black – – – COMPOSITION OF THE COLOURS The coloration of two-colour wires is indicated by the composition of the symbol listed. Example: G–V = Yellow-Green with longitudinal colouring G/V = Yellow-Green with transversal colouring 00-11 SK714-5 SK815-5 SK815-5 turbo...
  • Page 16 Control valve: • 3-spool (standard) 21.5 21.5 21.5 • 4-spool (High-Flow) Work equipment (without bucket) • Arm • Work equipment support 171,5 171,5 • Bucket (L=1460 mm) 17,3 16,8 16,8 • Tilt cylinder • Dump cylinder 00-12 SK714-5 SK815-5 SK815-5 turbo...
  • Page 17 Oil change quantity: quantity of oil necessary to fill the system or unit during the normal inspection and maintenance operations. ASTM: American Society of Testing and Materials SAE: Society of Automotive Engineers API: American Petroleum Institute SK714-5 SK815-5 SK815-5 turbo 00-13...
  • Page 18 PAGE INTENTIONALLY LEFT BLANK...
  • Page 19 2.402 2.441 2.480 2.520 2.559 2.756 2.795 2.835 2.874 2.913 2.953 2.992 3.032 3.071 3.110 3.150 3.189 3.228 3.268 3.307 3.346 3.386 3.425 3.465 3.504 3.543 3.583 3.622 3.661 3.701 3.740 3.780 3.819 3.858 3.898 SK714-5 SK815-5 SK815-5 turbo 00-15...
  • Page 20 143.30 145.51 147.71 149.91 152.12 154.32 156.53 158.73 160.94 163.14 165.35 167.55 169.76 171.96 174.17 176.37 178.57 180.78 182.98 185.19 187.39 189.60 191.80 194.01 196.21 198.42 200.62 202.83 205.03 207.24 209.44 211.64 213.85 216.05 218.26 00-16 SK714-5 SK815-5 SK815-5 turbo...
  • Page 21 14.298 14.518 14.738 14.958 15.178 15.398 15.618 15.838 16.058 16.278 16.498 16.718 16.938 17.158 17.378 17.598 17.818 18.037 12.257 18.477 18.697 18.917 19.137 19.357 19.577 19.797 20.017 20.237 20.457 20.677 20.897 21.117 21.337 21.557 21.777 SK714-5 SK815-5 SK815-5 turbo 00-17...
  • Page 22 121.605 122.342 123.079 123.816 124.553 125.290 126.027 126.764 127.501 128.238 128.975 129.712 130.449 131.186 131.923 132.660 133.397 134.134 134.871 135.608 136.345 137.082 137.819 138.556 139.293 140.030 140.767 141.504 142.241 142.978 143.715 144.452 145.189 145.926 146.663 00-18 SK714-5 SK815-5 SK815-5 turbo...
  • Page 23 16.830 16.932 17.034 17.136 17.238 17.340 17.442 17.544 17.646 17.748 17.850 17.952 18.054 18.156 18.258 18.360 18.462 18.564 18.666 18.768 18.870 18.972 19.074 19.176 19.278 19.380 19.482 19.584 19.686 19.788 19.890 19.992 20.094 20.196 20.298 SK714-5 SK815-5 SK815-5 turbo 00-19...
  • Page 24 1193.4 1200.7 1207.9 1215.1 1222.4 1129.6 1236.8 1244.1 1251.3 1258.5 1265.8 1273.0 1280.1 1287.5 1294.7 1301.9 1309.2 1316.4 1323.6 1330.9 1338.1 1345.3 1352.6 1359.8 1367.0 1374.3 1381.5 1388.7 1396.0 1403.2 1410.4 1417.7 1424.9 1432.1 1439.4 00-20 SK714-5 SK815-5 SK815-5 turbo...
  • Page 25 3118.1 3132.6 3147.1 3161.6 3176.1 3263.2 3277.7 3192.2 3306.7 3321.2 3190.7 3205.2 3219.7 3234.2 3248.7 3335.7 3350.2 3364.7 3379.2 3393.7 3408.2 3422.7 3437.2 3451.7 3466.2 3480.7 3495.2 3509.7 3524.2 3538.7 3553.2 3567.7 3582.2 3596.7 3611.2 SK714-5 SK815-5 SK815-5 turbo 00-21...
  • Page 26 –14.4 42.8 105.8 24.4 168.8 68.3 311.0 –13.9 44.6 107.6 25.0 170.6 71.1 320.0 –13.3 46.4 109.4 25.6 172.4 73.9 329.0 –12.8 48.2 111.2 26.1 174.2 76.7 338.0 –12.2 50.0 113.0 26.7 176.0 79.4 347.0 00-22 SK714-5 SK815-5 SK815-5 turbo...

  • Page 27: Table Of Contents

    SK714-5 (Road homologation) ........ 14 Electrical diagram (Frame line standard) ....79 Hydraulic circuit Electrical diagram (Frame line optional) ....83 SK815-5 - SK815-5 turbo (Standard) ...... 15 Electrical diagram (Cabin line standard) ....87 Hydraulic circuit Electrical diagram (Cabin line optional)....93 SK815-5 - SK815-5 turbo (Road homologation)..16 Electrical diagram (Top-cabin light line standard) ..101...

  • Page 28: Structure And Function

    STRUCTURE AND FUNCTION P.T.O. P.T.O. RKS01090 1. Joint 2. Spring pin 3. Dumper 4. Flywheel cover 5. Hydraulic pump 10-2 SK714-5 SK815-5 SK815-5 turbo...

  • Page 29: Power Train

    A B C RKS00990 1. Engine 5. High-flow solenoid valve 2. Hydraulic pump 6. L.H. final drive 3. Control valve 7. R.H. final drive 4. Solenoid valve 8. Axle 4a. Servocontrol 4b. Speed increment 4c. Parking brake SK714-5 SK815-5 SK815-5 turbo 10-3...

  • Page 30: Transmission

    STRUCTURE AND FUNCTION TRANSMISSION TRANSMISSION View X RKS01001 Section A - A 1. L.H. final drive 2. Front trasmission chain 3. Rear trasmission chain 4. Master link 10-4 SK714-5 SK815-5 SK815-5 turbo...
  • Page 31 STRUCTURE AND FUNCTION TRANSMISSION Section B - B Section C -C RKS01010 1. Front wheel 2. Axle housing 3. Sprocket 4. Shaft 5. Front trasmission chain 6. Rear wheel 7. Rear trasmission chain SK714-5 SK815-5 SK815-5 turbo 10-5...

  • Page 32: Final Drive

    PP2 Port – From solenoid valve group ST1 (C Port) PP2 Port – From solenoid valve group ST1 (C Port) (parking brake) (parking brake) DR Port – To hydraulic tank DR Port – To hydraulic tank 10-6 SK714-5 SK815-5 SK815-5 turbo...
  • Page 33 12. Spring 20. Flange 28. Plug 5. Pin 13. Piston 21. Collar 29. Spring 6. Gear 14. Brake spring 22. Gasket 7. Shoe 15. Bushing 23. Plug 8. Brake piston 16. Retainer plate 24. Spring SK714-5 SK815-5 SK815-5 turbo 10-7...
  • Page 34 When an increase in speed is demanded, the oil is sent under pressure to the command piston (10). The command pi- ston (10) moves to the left ( ) until the surface “B” makes contact with the housing and the angle of the swash plate β becomes (the displacement of the motor is reduced). 10-8 SK714-5 SK815-5 SK815-5 turbo...
  • Page 35 The force exerted by the oil is greater than the force of the springs (2) and the piston (1) is therefore pushed to the right ( ) thus releasing the friction disk (3) and permitting rotation of the cylinder block (7) (and also of the drive shaft). RKS01060 SK714-5 SK815-5 SK815-5 turbo 10-9...
  • Page 36 The valve also functions in the same way when the pressurised oil is sent to the “B” port. The only difference is that the selector valve moves to the left ( ), and the oil gallery “D” communicates with the “A” port. RKS01070 10-10 SK714-5 SK815-5 SK815-5 turbo...
  • Page 37 (2) of the reduction gearing (connected to the planetary gear by means of grooved toothing). The reduction ratio of the rotation speed is described by the formula: R= Zs1/(Zs1+Za1) Zs1= number of sun gear teeth Za1= number of ring gear teeth RKS01080 SK714-5 SK815-5 SK815-5 turbo 10-11...
  • Page 38 PAGE INTENTIONALLY LEFT BLANK...

  • Page 39: Hydraulic Circuit Sk714-5 (Standard)

    -18 JIC) ø 9.5L=1000( -18 Jic) ø 6.5L=350( -18 Jic) ø 6.5L=680( -18 Jic) ø 19L=1650 ø ø 19L=1450(1” -12 JIC) (1” -12 JIC) ø ø 9.5L=1300( -18 Jic) Travel motor R.H. ø 9.5L=1300( -18 Jic) SK714-5 SK815-5 SK815-5 turbo 10-13...

  • Page 40: Hydraulic Circuit Sk714-5 (Road Homologation)

    -18 JIC) ø 10L=470( -18 Jic) ø 10L=350( -18 Jic) ø 10L=680( -18 Jic) ø 19L=1650 ø ø 19L=1450(1” -12 JIC) (1” -12 JIC) ø ø 9.5L=1300( -18 Jic) Travel motor R.H. ø 9.5L=1300( -18 Jic) 10-14 SK714-5 SK815-5 SK815-5 turbo...

  • Page 41: Hydraulic Circuit Sk815-5 - Sk815-5 Turbo (Standard)

    STRUCTURE AND FUNCTION HYDRAULIC CIRCUIT SK815-5 - SK815-5 turbo (STANDARD) HYDRAULIC CIRCUIT SK815-5 - SK815-5 turbo (STANDARD) P4 P3 ø 12.7L=3700 ( 13 16 -16 Orfs) ø 16 t=2 ø 12.7L=3700 ( 13 16 -16 Orfs) ø 16 t=2 100 Mesh 100 Mesh ø...

  • Page 42: Hydraulic Circuit Sk815-5 - Sk815-5 Turbo (Road Homologation)

    STRUCTURE AND FUNCTION HYDRAULIC CIRCUIT SK815-5 - SK815-5 turbo (ROAD HOMOLOGATION) HYDRAULIC CIRCUIT SK815-5 - SK815-5 turbo (ROAD HOMOLOGATION) P4 P3 ø 12.7L=3700 ( 13 16 -16 Orfs) ø 16 t=2 ø ( 13 12.7L=3700 16 -16 Orfs) ø 16 t=2...

  • Page 43: Hydraulic Pump

    4. Charge safety valve equipment gear pump (6), and adjustment screws (7), (8), 5. Charge pump (9). 6. Work equipment pump 7. Adjustment screw (Neutral position) 8. Adjustment screw (Max. displacement 9. Adjustment screw (Pump power control) SK714-5 SK815-5 SK815-5 turbo 10-17...
  • Page 44 4. Charge safety valve equipment gear pump (6), and adjustment screws (7), (8), 5. Charge pump (9). 6. Work equipment pump 7. Adjustment screw (Neutral position) 8. Adjustment screw (Max. displacement 9. Adjustment screw (Pump power control) 10-18 SK714-5 SK815-5 SK815-5 turbo...
  • Page 45 STRUCTURE AND FUNCTION HYDRAULIC PUMP HST PUMP LPV40 + 40 (SK815-5 – SK815-5 turbo STANDARD FLOW) RKS00310 1. Piston pump 9. Adjustment screw (Pump power control) 2. Control piston 10. AS valve 3. Suction safety valve 11. Shuttle valve 4. Charge safety valve STRUCTURE 5.
  • Page 46 STRUCTURE AND FUNCTION HYDRAULIC PUMP HST PUMP LPV40 + 40 (SK815-5 – SK815-5 turbo HIGH FLOW) 1 8 7 2 RKS00320 1. Piston pump STRUCTURE This pump is composed of variable swash plate type tan- 2. Control piston dem piston pumps (1), control pistons (2), suction safety 3.
  • Page 47 STRUCTURE AND FUNCTION HYDRAULIC PUMP SK815-5 – SK815-5 turbo (STANDARD FLOW AND HIGH FLOW) SK714-5 FUNCTION • The rotation and torque transmitted to the pump shaft is converted into hydraulic energy, and pressurized oil is di- scharged according to the load.
  • Page 48 If the direction of swash plate angle is changed, the relation between discharge and suction of α port PA, PB reverse (Fig. 3). RKS00100 F" Fig. 3 10-22 SK714-5 SK815-5 SK815-5 turbo...
  • Page 49 This screw should be adjusted when the machine doesn’t travel straight or machine maximum speed is little bit wrong. • Screw B is the fine adjuster of neutral position of control piston (5). That adjust prevent machine from creep. SK714-5 SK815-5 - SK815-5 turbo RKS00260 SK714-5 SK815-5 SK815-5 turbo 10-23...
  • Page 50 On SK714-5, AS valve is not installed, so pressurized oil from PPC valve is directly inducted to control piston. • On SK815-5 and SK815-5 turbo, AS valve is installed and lower pressure between AS valve output pressure and PPC pressure is selected by shuttle valve and inducted to control piston (see topic “shuttle valve”).
  • Page 51 The valve restricts the maximum pressure inside the HST circuit in order to protect the HST circuit. 2) Suction safety valve The valve ensures the flow of the charge oil to the closed HST circuit and prevents the charge oil from flowing into the pump high pressure side (delivery side). SK714-5 SK815-5 SK815-5 turbo 10-25...
  • Page 52 If abnormal pressure is generated in the circuit and the oil pressure at ports A and D reaches to the pressure set by spring (3D), poppet (3A) is pushed to direction, and oil at port A is relieved to port B to reduce the oil pressure at port A. RKS00060 10-26 SK714-5 SK815-5 SK815-5 turbo...
  • Page 53 The HST circuit is closed, and the charge oil does not flow into the HST circuit. Therefore the charge pressurized oil from the charge pump (1) all passes the charge safety valve (2) and is drained to the pump case. Travel motor Travel pump RKS00121 SK714-5 SK815-5 SK815-5 turbo 10-27...
  • Page 54 (A1>A2). In this way, the charge pressure oil at port B flows into port PB through this clearance to charge to the HST circuit.. RKS00080 10-28 SK714-5 SK815-5 SK815-5 turbo...
  • Page 55 Suction safety valve RKS00040 FUNCTION There is the charge safety valve installed to the HST pump. The charge safety valve restricts the maximum pressure inside the charge circuit in order to protect the charge circuit. SK714-5 SK815-5 SK815-5 turbo 10-29...
  • Page 56 Valve (2A) is pushed to direction by oil pressure at port A, and oil at port A is relieved to port B. In this way, the pressure in the charge circuit is prevented from going any higher. RKS00030 10-30 SK714-5 SK815-5 SK815-5 turbo...
  • Page 57 HST pump at the same time. 3. Shaft • Discharged oil is delivered to AS valve and charge sa- 4. Outer ring fety valve. (AS valve is only installed SK815-5 and 5. Case SK815-5 turbo). 6. Inner roter •...
  • Page 58 Charge pump is connected to HST pump shaft by coupling (2), so inner roter (6) and outer roter (7) rotate. • When inner roter (6) and outer roter (7) rotate, capacity of A increase and oil is sucked, and capacity of B decrease and oil discharge. 10-32 SK714-5 SK815-5 SK815-5 turbo...
  • Page 59 1C. Spring • The AS valve outputs pressure correspond with en- 1D. Spring gine revolution. 1E. Spring 1F. Valve 1G. Valve 1H. Nut 1L. Screw 2. Charge pump 3. Orifice 4. Charge safety valve 5. Engine SK714-5 SK815-5 SK815-5 turbo 10-33...
  • Page 60 In port C, the AS valve output pressure that is balanced with spring (1C) and (1D) load is generated by reducing from charge pressure of port G. So the AS valve outputs pressure correspond with charge flow that is changed by engine (5) revolution. 10-34 SK714-5 SK815-5 SK815-5 turbo...
  • Page 61 • By the hydraulic force F1 and F2, the shuttle valve selects lower pressure either PPC pressure or AS valve pressure. It outputs lower pressure of them from port E to control pump swash plate. SK714-5 SK815-5 SK815-5 turbo 10-35...

  • Page 62: Control Valve (3-Spool)

    STRUCTURE AND FUNCTION CONTROL VALVE CONTROL VALVE (3-SPOOL) SK714-5 – SK815-5 – SK815-5 turbo STANDARD RKS00250 P1: from gear pump A3: to attachment port to tank B1: to lift arm cylinder (bottom side) Ts: to tank B2: to bucket cylinder (bottom side)
  • Page 63 4. Stop plug for individual relief valve 11. Check valve (circulating circuit) 5. Suction valve (lift arm head side) 12. Combination circulating valve 6. Series - parallel circuit switching valve 13. Leveling circulating valve 7. Spool (lift arm) SK714-5 SK815-5 SK815-5 turbo 10-37...
  • Page 64 6. Pressure compensation valve R (bucket) 15. Stop plug for individual relief valve 7. Pressure compensation valve R (lift arm) F: Flow control valve 8. Spool (lift arm) R: Pressure reducing valve 9. Suction valve 10-38 SK714-5 SK815-5 SK815-5 turbo...

  • Page 65: Control Valve (4-Spool)

    STRUCTURE AND FUNCTION CONTROL VALVE CONTROL VALVE (4-SPOOL) SK815-5 – SK815-5 turbo SUPER HIGH-FLOW RKS00370 P1. from gear pump A3: to attachment port P2: from gear pump A4: to High - Flow port to tank B1: to lift arm cylinder (bottom side)
  • Page 66 2. Stop plug (lift arm bottom side) 7. Spool (lift arm) 3. Suction valve (bucket bottom side) 8. Spool (bucket) 4. Stop plug for individual relief valve 9. Spool (attachment) 5. Float valve 10. Spool (High-Flow) 10-40 SK714-5 SK815-5 SK815-5 turbo...
  • Page 67 6. Check valve (for High - Flow joining circuit) F: Flow control valve 7. Pressure compensation valve R (High Flow) R: Pressure reducing valve 8. Pressure compensation vavle R (attachment) 9. Pressure compensation valve R (bucket) SK714-5 SK815-5 SK815-5 turbo 10-41...
  • Page 68 9. Pressure compensation valve R (bucket) 21. Check valve (High - Flow joining circuit) 10. Spool (bucket) 22. Spool (High Flow joining) 11. Suction valve F: Flow control valve 12. Pressure compensation valve R (bucket) R: Pressure reducing valve 10-42 SK714-5 SK815-5 SK815-5 turbo...

  • Page 69: Clss

    In this way, the flow of oil from the pump is divided in proportion to area of opening S1 and S2 of each valve. Load Load Actuator Actuator ∆ P ∆ P Pressure Pressure compensation compensation valve valve RKS00691 Pump SK714-5 SK815-5 SK815-5 turbo 10-43...
  • Page 70 During individual operations, attachment High-flow keep individual demand flow rate. However during compound operations, they are divided in the proportion of 1 to 9 and keep High-flow section flow rate. (SK815-5 and SK815-5 turbo has only Super-flow specification.) Hydraulic circuit diagram and names of valves...
  • Page 71 Q1:Q2= (notch (b) + notch (d) ): notch (C) Q1= flow rate flows to B, Q2= flow rate flows to C • Q1 passes through the check valve (6) and then supplies to the bucket cylinder. SK714-5 SK815-5 SK815-5 turbo 10-45...
  • Page 72 When this happens, the flow divider (5) is operated as P1=P2, so flow rate (Q1, Q2) is divided to B and C in prportion to the area of opening of notch (b) and (c) as below expression. Q1:Q2= notch (b):notch (C) • Q1 passes through the check valve (6) and then supplies to the bucket cylinder. 10-46 SK714-5 SK815-5 SK815-5 turbo...
  • Page 73 (1) Low bucket load: Series circuit • (2) High bucket load: Parallel circuit • Depend on bucket load, a circuit can change automatically as above. Then the machine gets high speed and strong digging power. RKS00730 SK714-5 SK815-5 SK815-5 turbo 10-47...
  • Page 74 When this happens, notch (f) of the lift arm spool and notch (a) of the bucket spool open, so the lift arm and the bucket become parallel circuit (CLSS). And flow rate of the lift arm raise (Q3) and teh bucket digging flow rate are divided as below expression. Q3:Q4= notch (f): notch (a) 10-48 SK714-5 SK815-5 SK815-5 turbo...
  • Page 75 In this way, the pressure difference between upstream pressure PPA and down stream pressure PA of both spools used during compund operations is the same, so the pump flow is divided in prioportion to the area of opening of notch a of each spool. SK714-5 SK815-5 SK815-5 turbo 10-49...
  • Page 76 STRUCTURE AND FUNCTION CLSS 3.5 DIVIDING FUNCTION (1:9) (Only Super-Flow specification for SK815-5 and SK815-5 turbo) Function When each section is operated individually Attachment: 60L/min High-Flow attachment: 100L/min When standard attachment and high flow attachment are operated at the same time...

  • Page 77: Solenoid Valve

    – To PPC valve 2. Servocontrol C Port – To travel motors (PP2 port) 3. Parking brake P Port – From hydraulic pump (E1 port) T Port – To hydraulic tank S Port – To accumulator SK714-5 SK815-5 SK815-5 turbo 10-51...
  • Page 78 SOLENOID VALVE ST2 HIGH-FLOW CONTROL RKS01140 T Port – To hydraulic tank P1 Port – From control valve (PA3 port) P2 Port – From control valve (PB3 port) S Port – To control valve (Pi2 port) 10-52 SK714-5 SK815-5 SK815-5 turbo...

  • Page 79: Accumulator

    B. • If the oil under in line B falls below the maximum ca- libration pressure (even after intensive use), the rub- ber bag (1) will expand due to pressure from the nitrogen it. SK714-5 SK815-5 SK815-5 turbo 10-53...

  • Page 80: Pattern Change Valve (Optional)

    To hydraulic pump (DB2 port) Pin 5. From R.H. PPC valve (P1 port) Pout 5. To control valve (PA1 port) Pin 6. From R.H. PPC valve (P2 port) Pout 6. To control valve (PB1 port) 10-54 SK714-5 SK815-5 SK815-5 turbo...
  • Page 81 Section F - F Section D - D Section G - G Section G - G RKS00651 1. Lever 5. Upper cover 2. Rotor 6. Lower cover 3. Valce seat 7. Pin lock 4. Ball SK714-5 SK815-5 SK815-5 turbo 10-55...
  • Page 82 P out 3 P in 2 FRONT P out 2 P out 1 P in 1 P in 5 P out 5 P out 6 P in 6 BUCKET CURL R.H. REVERSE R.H. FORWARD BUCKET DUMP RKS00931 10-56 SK714-5 SK815-5 SK815-5 turbo...
  • Page 83 PAGE INTENTIONALLY LEFT BLANK...

  • Page 84: R.h. Ppc Valve (Standard)

    - To control valve (PA2 port) P2 Raise arm P4 port - To control valve (PB2 port) P3 Curl bucket P port - From solenoid valve group ST1 (B port) P4 Dump bucket T port - To hydraulic tank 10-58 SK714-5 SK815-5 SK815-5 turbo...
  • Page 85 Section D - D Section C - C Section E - E RKS00811 1. Spool 6. Nut 2. Metering spring 7. Joint 3. Centering spring 8. Cover 4. Piston 9. Stopper 5. Disc 10. Body SK714-5 SK815-5 SK815-5 turbo 10-59...
  • Page 86 Therefore, metering spring (2) is compressed pro- portionally to the amount of movement of the control lever, so the pressure at port P1 also rises in pro- portion to the travel of the control lever. (Fig. 2) RKS00830 Fig. 2 10-60 SK714-5 SK815-5 SK815-5 turbo...
  • Page 87 At almost the same time, it is connected to pump pressure chamber PP, and the pump pressure is supplied until the pressure at port P1 recovers to a pressure that corresponds to the lever position. (Fig. 3). RKS00840 Fig. 3 SK714-5 SK815-5 SK815-5 turbo 10-61...

  • Page 88: R.h. Ppc Valve (Pattern Change) (Optional)

    P port - From solenoid valve group ST1 (B port) P4 Dump bucket T port - To hydraulic tank OPTIONAL PATTERN: P1 R.H. travel forward P2 R.H. travel reverse P3 Curl bucket P4 Dump bucket 10-62 SK714-5 SK815-5 SK815-5 turbo...
  • Page 89 Section D - D Section C - C Section E - E RKS00811 1. Spool 6. Nut 2. Metering spring 7. Joint 3. Centering spring 8. Cover 4. Piston 9. Stopper 5. Disc 10. Body SK714-5 SK815-5 SK815-5 turbo 10-63...
  • Page 90 Therefore, metering spring (2) is compressed pro- portionally to the amount of movement of the control lever, so the pressure at port P1 also rises in pro- portion to the travel of the control lever. (Fig. 2) RKS00830 Fig. 2 10-64 SK714-5 SK815-5 SK815-5 turbo...
  • Page 91 At almost the same time, it is connected to pump pressure chamber PP, and the pump pressure is supplied until the pressure at port P1 recovers to a pressure that corresponds to the lever position. (Fig. 3). RKS00840 Fig. 3 SK714-5 SK815-5 SK815-5 turbo 10-65...

  • Page 92: L.h. Ppc Valve (Standard)

    P port - From solenoid valve group ST1 P4 R.H. travel reverse When acting control lever, two ports are pressurized T port - To hydraulic tank contemporarily (i.e.: travel forward pressurize P1 and P3 ports). 10-66 SK714-5 SK815-5 SK815-5 turbo...
  • Page 93 Section G - G RKS00871 1. Spool 8. Cover 2. Metering spring 9. Stopper 3. Centering spring 10. Body 4. Piston 11. Plug 5. Disc 12. Ball 6. Nut 13. Seat 7. Joint 14. Body (for shuttle valve) SK714-5 SK815-5 SK815-5 turbo 10-67...
  • Page 94 Therefore, metering spring (2) is compressed pro- portionally to the amount of movement of the control lever, so the pressure at port P1 also rises in pro- portion to the travel of the control lever. (Fig. 2) RKS00900 Fig. 2 Distributore 10-68 SK714-5 SK815-5 SK815-5 turbo...
  • Page 95 At almost the same time, it is connected to pump pressure chamber PP, and the pump pressure is supplied until the pressure at port P1 recovers to a pressure that corresponds to the lever position. (Fig. 3). RKS00880 Fig. 3 SK714-5 SK815-5 SK815-5 turbo 10-69...

  • Page 96: L.h. Ppc Valve (Pattern Change) (Optional)

    P3 L.H. travel P port - From solenoid valve group ST1 P4 R.H. travel T port - To hydraulic tank OPTIONAL PATTERN: P1 L.H. travel forward P2 L.H. travel reverse P3 Raise arm P4 Lower arm 10-70 SK714-5 SK815-5 SK815-5 turbo...
  • Page 97 Section D - D Section C - C Section E - E RKS00811 1. Spool 7. Joint 2. Metering spring 8. Cover 3. Centering spring 9. Stopper 4. Piston 10. Body 5. Disc 6. Nut SK714-5 SK815-5 SK815-5 turbo 10-71...
  • Page 98 Therefore, metering spring (2) is compressed pro- portionally to the amount of movement of the control lever, so the pressure at port P1 also rises in pro- portion to the travel of the control lever. (Fig. 2) RKS00830 Fig. 2 10-72 SK714-5 SK815-5 SK815-5 turbo...
  • Page 99 At almost the same time, it is connected to pump pressure chamber PP, and the pump pressure is supplied until the pressure at port P1 recovers to a pressure that corresponds to the lever position. (Fig. 3). RKS00840 Fig. 3 SK714-5 SK815-5 SK815-5 turbo 10-73...

  • Page 100: Cylinders

    4. Gasket 11. Cilinder 5. Rod 12. Gasket 6. Gasket 13. Head 7. Ring Unit: mm Max. cylinder Min. cylinder Cilinder Ø Rod Ø Piston Piston stroke Key size length length Bucket raise 1616 Bucket tilt 10-74 SK714-5 SK815-5 SK815-5 turbo...

  • Page 101: Electrical Diagram (Engine Line)

    GENERATOR INT. FILTRO OLIO IDR. PRESSOSTATO 1 BACK-UP HYDR. OIL FILTER SW. BACK-UP PRESSURE SWITCH 1 ALTERNATORE GENERATOR +30 IMPIANTO POWER (+30) CONNECT WITH XS MOTORINO AVV. FUSIBILE GENERALE(50A) STARTER MOTOR GENERAL FUSE (50A) RKS02920 SK714-5 SK815-5 SK815-5 turbo 10-75...
  • Page 102 STRUCTURE AND FUNCTION ELECTRICAL DIAGRAM (ENGINE LINE) (2/3) ELECTRICAL DIAGRAM (ENGINE LINE) (2/3) SAFETY R-N2.5 RELAY M2.5 X08 X08 R-N1 R-N1.5 R-V1 C-N1 C-L1 S-G1 R-N1 B-N1 R-G1 B-G1 12Vcc ENGINE YANMAR PARTS RKS00421 SK714-5 SK815-5 SK815-5 turbo 10-76...
  • Page 103 Hydraulic oil filter blocked switch C5 terminal Stop light pressure 1 switch 2 way connector Stop light pressure 2 switch 2 way connector Back-up pressure 1 switch 2 way connector Back-up pressure 2 switch 2 way connector Stop fuel solenoid valve SK714-5 SK815-5 SK815-5 turbo 10-77...
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  • Page 105: Electrical Diagram (Frame Line Standard)

    PPC SERV. VALVE Y1 E/V SECONDA ELETTROVALVOLA VELOCITA' Y3 FRENO Y6 2nd SPEED PRESSOSTATO BRAKE VALVE Y6 VALVE Y3 FRENO BRAKE PRESSURE PRESS. PPC SAFETY SWITCH PPC SAFETY PRESSURE SWITCH X32A E/V FLOTTANTE Y2 FLOAT VALVE Y2 RKS02770 SK714-5 SK815-5 SK815-5 turbo 10-79...
  • Page 106 R-N1.5 X10.1 R-N1.5 X10.1 V-N1 X10.1 R-V1 M-B1 X10.1 R-N1 X10.1 X10.1 C-N1 M-N1 X10.1 C-L1 R-G1 X10.1 S-G1 X10.1 C-N1 X10.1 B-N1 C-L1 X10.1 R-G1 S-G1 X10.1 B-G1 B-N1 B-G1 N2.5 X32A GND2 RKS02590 SK714-5 SK815-5 SK815-5 turbo 10-80...
  • Page 107 Second speed valve 2 way connector Brake pressure switch 1 way connector Cabin line 13 way connector Cabin line 4 way connector Ground 2 way connector Cabin line 5 way connector PPC valve Float valve Second speed valve Brake valve SK714-5 SK815-5 SK815-5 turbo 10-81...
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  • Page 109: Electrical Diagram (Frame Line Optional)

    DETENT Y5 FRENO HI-FLOW MOMENTARY HI-FLOW DETENT PRESS. PPC SAFETY BRAKE PRESSURE VALVE Y4 VALVE Y5 PPC SAFETY SWITCH PRESSURE SWITCH X32A E/V FLOTTANTE Y2 A LINEA CABINA FLOAT VALVE Y2 TO CABIN CABLE RKS02780 SK714-5 SK815-5 SK815-5 turbo 10-83...
  • Page 110 X10.1 C-L1 R-G1 X10.1 S-G1 X10.1 C-N1 X10.1 B-N1 C-L1 X10.1 R-G1 S-G1 X10.1 B-G1 B-N1 B-G1 C-B1 V-B1 A-N1 A-B1 A-G1 Z-N1 A-V1 S-N1 R-N1 N2.5 X32A ( POWER BOX ATTACH. LINE ) RKS02580 SK714-5 SK815-5 SK815-5 turbo 10-84...
  • Page 111 Cabin line 4 way connector Ground cabin line 2 way connector Cabin line 5 way connector Cabin line 11 way connector PPC valve Float valve Second speed valve Reverse hi-flow momentary valve Super flow detent valve Brake valve SK714-5 SK815-5 SK815-5 turbo 10-85...
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  • Page 113: Electrical Diagram (Cabin Line Standard)

    INT. FARO LAVORO POST. S1 REAR WORK LIGHTS SWITCH S1 INT. GIROFARO S7 BEACON LIGHT SWITCH S7 PANNELLO DI CONTROLLO CONTROL PANEL PANNELLO DI CONTROLLO CONTROL PANEL PULSANTE FRENO S8 RKS02570 BRAKE BUTTON S8 RKS02620 SK714-5 SK815-5 SK815-5 turbo 10-87...
  • Page 114 H-L1 X46.1 X46.1 H-L1 X45.1 R-N1.5 B-G1 X45.1 V-N1 X45.1 M-B1 X45.1 L-R1.5 X45.1 X45.1 M-N1 X45.1 R-G1 X45.1 X45.1 C-N1 X45.1 C-L1 X45.1 S-G1 X45.1 B-N1 CONTROL PANEL (UNIDECK) X45.1 X47.1 B-G1 X47.1 RKS02540 SK714-5 SK815-5 SK815-5 turbo 10-88...
  • Page 115 L/B1 A/B1 A-G1.5 L/G1 S/N1 B/R1 G/R1 B-N1 G1.5 H0.5 H-N1 B-R1 B-R1 H-R1 M-N1 H-R1.5 H-R1 S/N1 H-R1 GND3 15/1 30/3 49/4 30b/2 TO TOP CABIN LINE STD L/B1 H-R1 G/R1 H/R1 H-G1 RKS02550 SK714-5 SK815-5 SK815-5 turbo 10-89...
  • Page 116 L-N1 X81-2 FLOAT LAMP POSITIVE M-N1 X81-6 LOW BEAM LAMP POSITIVE H0.5 X81-3 PARKING BRAKE LAMP NEGATIVE M-V1 X81-7 WARNING LED NEGATIVE M/B1 X81-4 SECOND SPEED LAMP POSITIVE M-B1 X81-8 SEAT LED NEGATIVE G/N1 RKS02560 SK714-5 SK815-5 SK815-5 turbo 10-90...
  • Page 117 Electronic unit 23 way connector Buzzer 1 way connector Buzzer 1 way connector Proximity bar 3 way connector Safety seat switch 2 way connector Fuse 1 way connector Fuse 1 way connector Fuse 1 way connector SK714-5 SK815-5 SK815-5 turbo 10-91...
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  • Page 119: Electrical Diagram (Cabin Line Optional)

    INT. FARO LAVORO POST. S1 REAR WORK LIGHTS SWITCH S1 X104 INT. GIROFARO S7 BEACON LIGHT SWITCH S7 PANNELLO DI CONTROLLO CONTROL PANEL PANNELLO DI CONTROLLO CONTROL PANEL PULSANTE FRENO S8 BRAKE BUTTON S8 RKS02670 SK714-5 SK815-5 SK815-5 turbo 10-93...
  • Page 120 X46.1 L-R1.5 H-L1 X45.1 R-N1.5 L-R1.5 X45.1 V-N1 B-G1 X45.1 M-B1 X45.1 L-R1.5 X45.1 X45.1 M-N1 X45.1 R-G1 X45.1 X45.1 C-N1 X45.1 C-L1 X45.1 S-G1 X45.1 B-N1 CONTROL PANEL (UNIDECK) X45.1 B-G1 X47.1 X47.1 RKS02620 SK714-5 SK815-5 SK815-5 turbo 10-94...
  • Page 121 G/R1 B-N1 G1.5 H0.5 H-N1 B-R1 B-R1 H-R1 M-N1 H-R1.5 R-V1 H-R1 L-N1 L-R1.5 S/N1 L-R1.5 H-R1 15/1 30/3 49/4 30b/2 L/B1 H-R1 GND3 G/R1 H/R1 = Parts not included in the wiring H-G1 RKS02630 SK714-5 SK815-5 SK815-5 turbo 10-95...
  • Page 122 X105 A-B1 G/R1 X49.1 A-G1 X106 G/R1 X49.1 Z-N1 X106 V-B1 X49.1 A-V1 X106 X49.1 S-N1 SWITCH EV ENPI X49.1 L-R1.5 X106 L-R1.5 RIGHT LEVER X106 X107 G/R1 X107 C-B1 X107 X107 L-R1.5 X107 RKS02640 SK714-5 SK815-5 SK815-5 turbo 10-96...
  • Page 123 STRUCTURE AND FUNCTION ELECTRICAL DIAGRAM (CABIN LINE OPTIONAL) (5/7) ELECTRICAL DIAGRAM (CABIN LINE OPTIONAL) (5/7) RELAYS UNIT CL(T) -(53S) RKS00790 SK714-5 SK815-5 SK815-5 turbo 10-97...
  • Page 124 L-N1 X81-2 FLOAT LAMP POSITIVE M-N1 X81-6 LOW BEAM LAMP POSITIVE H0.5 X81-3 PARKING BRAKE LAMP NEGATIVE M-V1 X81-7 WARNING LED NEGATIVE M/B1 X81-4 SECOND SPEED LAMP POSITIVE M-B1 X81-8 SEAT LED NEGATIVE G/N1 RKS02650 SK714-5 SK815-5 SK815-5 turbo 10-98...
  • Page 125 Fuse 1 way connector Up-down right stabilizer button Fuse 1 way connector Beacon light switch Fuse 1 way connector Brake switch Fuse 1 way connector Hazard switch Fuse 1 way connector Starting switch Fuse 1 way connector SK714-5 SK815-5 SK815-5 turbo 10-99...
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  • Page 127: Electrical Diagram (Top-Cabin Light Line Standard)

    ELECTRICAL DIAGRAM (TOP-CABIN LIGHT LINE STANDARD) (1/2) FARO DI LAVORO ANTERIORE SX FRONT LEFT WORKING LIGHT LINEA CRUSCOTTO FROM DASHBOARD CABLE X82.1 PRESA 12V CURRENT INTAKE(12V) AVV. ACUSTICO HORN MASSE GROUND GND4 FARO DI LAVORO ANTERIORE DX FRONT RIGHT WORKING LIGHT SK714-5 SK815-5 SK815-5 turbo 10-101...
  • Page 128 X113 Horn 1 way connector X82.1 N1.5 XP1, XP1A 12V socket, beacon light 1 way connector X82.1 X82.1 X82.1 H-N1 X82.1 H-N1 GND4 X82.1 X82.1 X82.1 X82.1 X82.1 X108 X108 X109 X109 XP1A X113 RKS00500 SK714-5 SK815-5 SK815-5 turbo 10-102...

  • Page 129: Electrical Diagram (Top-Cabin Light Line Omologation)

    LINEA CRUSCOTTO FROM DASHBOARD CABLE X82.1 PRESA 12V CURRENT INTAKE(12V) AVV. ACUSTICO HORN MASSE GROUND FARO ANABBAGLIANTE DX GND4 FRONT RIGHT MAIN BEAM FANALINO ANTERIORE DX FRONT RIGHT LIGHT MASSA AVV. ACUSTICO HORN GROUND RKS02790 SK714-5 SK815-5 SK815-5 turbo 10-103...
  • Page 130 Left front work lamp Left front work lamp Right front work lamp Right front work lamp Left rear work light Right rear work light HA2 Horn X82.1 11 way connector X130 Rear lights 7 way connector 12V socket SK714-5 SK815-5 SK815-5 turbo 10-104...

  • Page 131: Electrical Diagram (Top-Cabin Light Line Optional)

    FARO ANABBAGLIANTE SX RONT LEFT MAIN BEAM LINEA CRUSCOTTO FROM DASHBOARD CABLE X82.1 PRESA 12V CURRENT INTAKE(12V) AVV. ACUSTICO HORN MASSE GROUND FARO ANABBAGLIANTE DX GND4 FRONT RIGHT MAIN BEAM MASSA AVV. ACUSTICO HORN GROUND RKS02800 SK714-5 SK815-5 SK815-5 turbo 10-105...
  • Page 132 X82.1 11 way connector X82.1 H-G1 12V socket X82.1 N1.5 X82.1 X82.1 A-G1 X82.1 H-N1 X82.1 H-N1 X82.1 GND4 X82.1 X82.1 X82.1 X82.1 X108 X108 X109 X109 X108 X108 X109 X109 XP1A GND6 X113 RKS02690 SK714-5 SK815-5 SK815-5 turbo 10-106...
  • Page 133 When checking the level of the cooling liquid, wait until this liquid has cooled. If the radiator cap is removed while the liquid is still hot and under pressure, it may cause severe burns. Take great care not to get entangled in moving parts (fan, alternator belt or any of the rotating elements). 20-1 SK714-5 SK815-5 SK815-5 turbo...
  • Page 134 – kg/cm² At low idling Entire speed range °C Max. 120 Max. 120 temperature Fuel injection – B.T.D.C. degrees timing Fan belt Deflection when pressed with finge force – tension of approx. 10 kg 20-2 SK714-5 SK815-5 SK815-5 turbo...
  • Page 135 0.20 0.15 0.25 ± ± ± ± (250) (250) (250) (250) – – – – – – – – – – – – Max. 120 Max. 120 Max. 120 Max. 120 – – – – SK714-5 SK815-5 SK815-5 turbo 20-3...
  • Page 136 • Instrument coupling at centre of control lever knob – Raise arm • Instrument coupling on outside edge (for pedal control) – Lower arm – Dump bucket – Curled bucket – Right Attachment pedal – Left – Travel speed lever 20-4 SK714-5 SK815-5 SK815-5 turbo...
  • Page 137 71.5 – – 58.5 71.5 58.5 71.5 – – – – – – – – – – – – – – – – – – – – – – – – – – – – SK714-5 SK815-5 SK815-5 turbo 20-5...
  • Page 138 • Engine speed: max. – • Oil temperature: 45 55 °C With travel and – 2180 2180 2450 • Travel lever: at full stroke equipment pumps • Parking brake: applied • Raise: at end of stroke 20-6 SK714-5 SK815-5 SK815-5 turbo...
  • Page 139 – 14.46 13.7 15.2 14.46 13.7 15.2 – – – – 14.46 13.7 15.2 14.46 13.7 15.2 – – – – 2800 2800 2950 2800 2800 2950 – – 2400 2250 2500 2400 2250 2500 SK714-5 SK815-5 SK815-5 turbo 20-7...
  • Page 140 • Horizontal and level ground • Bucket: rated load: SK714-5: 650 kg SK815-5 – SK815-5 turbo: 700 kg Bucket cylinder • Engine: switched off Max. 15 Max.
  • Page 141 SK815-5 SK815-5 turbo Standard Permissible Standard Permissible value value value value Max. 250 Max. 275 Max. 250 Max. 275 Max. 21 Max. 30 Max. 21 Max. 30 Max. 15 Max. 22 Max. 15 Max. 22 SK714-5 SK815-5 SK815-5 turbo 20-9...
  • Page 142 RKS01220 • Engine speed: max. – • Oil temperature: 45 55 °C Measuring posture Bucket – Cylinder fully extended Cylinder fully – RKS01230 retracted • Engine speed: max. – • Oil temperature: 45 55 °C 20-10 SK714-5 SK815-5 SK815-5 turbo...
  • Page 143 TESTING AND ADJUSTMENTS NORMAL OR STANDARD TECHNICAL DATA FOR MACHINE SK815-5 SK815-5 turbo Standard Permissible Standard Permissible value value value value – – – – – – – – – – – – – – – – SK714-5 SK815-5 SK815-5 turbo 20-11...
  • Page 144 • Travel 20 metres on flat ground and measure the (Max. 250) (Max. 375) deviation. • Check all the direction ★ The surface must be firm and horizontal. RKS01710 ( ): Value with speed increment 20-12 SK714-5 SK815-5 SK815-5 turbo...
  • Page 145 68–84 68–84 – – – – 10.5 11.6 10.5 11.6 – – 16.0 14.4 17.6 16.0 14.4 17.6 Max. 250 Max. 375 Max. 250 Max. 375 (Max. 250) (Max. 375) (Max. 250) (Max. 375) SK714-5 SK815-5 SK815-5 turbo 20-13...
  • Page 146 Scale 60 bar available Scale 400 bar Commercially Compression gauge available Scale 600 bar Commercially Hydraulic pressure Compression gauge Scale 10 bar available Commercially Servocontrol kit 0–1000 bar available (Differential pressure) Commercially Pressure adapter Thread M10 available 20-14 SK714-5 SK815-5 SK815-5 turbo...
  • Page 147 (forward) and raising arm at the end of stroke: – 2450 SK714-5: 2180 – 2500 SK815-5 – SK815-5 turbo: 2250 ★ If engine efficiency does not fall within permissible limits, have the engine checked by an authorised workshop. RKS01191...
  • Page 148 (8), and the O-rings (9). Thoroughly clean the contact surface on the cylinder heads. 2 - Replace the valve cover (8) and mount the O-rings (9) and the lock nuts (10). ± 3 Nm Lock nuts for cover: 25 RKS01200 20-16 SK714-5 SK815-5 SK815-5 turbo...
  • Page 149 8 - After the reading, re-assemble the nozzle holder (2), and reconnect the high- pressure tube (1) and the con- nector (3). ± 0.98 Nm Nut that secures the nozzle: 7.84 ± 2.45 Nm High-pressure coupling: 31.85 Engine speed (giri/min) RKS01511 SK714-5 SK815-5 SK815-5 turbo 20-17...
  • Page 150 3 - Check the belt (1) tension. ★ If the belt has been replaced with a new one, check the tension again after about 20 hours of operation. Crankshaft Screw: 25 – 32 Nm pulley RKS01691 20-18 SK714-5 SK815-5 SK815-5 turbo...
  • Page 151 ★ In order to determine the degrees of intermediate fuel injection timing, sub-divide the space between 10° and 15°. ★ Normal fuel injection timing: 12 ± 1° Mark RKSA1021 RKSA1020 SK714-5 SK815-5 SK815-5 turbo 20-19...
  • Page 152 ★ After adjustment of the fuel injection timing: RKSA0090 8 - Connect the fuel delivery tubes (4) to the pump and re- place the clamp (3). ± 2.45 Nm Delivery tube couplings: 31.85 9 - Bleed any air from the fuel circuit. 20-20 SK714-5 SK815-5 SK815-5 turbo...
  • Page 153 ((accelerator lever in high idling position). ★ Low idling pressure: min 1 kg/cm ★ High idling pressure: 3.3 - 4.8 kg/cm 5 - Remove the adapter D1 and install the oil pressure sen- sor (1). RKSA0110 SK714-5 SK815-5 SK815-5 turbo 20-21...
  • Page 154 5 - Bring the accelerator command lever back to the low idling position and check that the retainer (3) has suf- ficient clearance. 6 - Repeat the same procedure for the accelerator pedal cable. RKSA1030 RKSA1040 20-22 SK714-5 SK815-5 SK815-5 turbo...
  • Page 155 3 - Loosen the screw (4), remove the washer (5) and pull out the complete handle (6). RKSA2370 4 - Remove the joint (7) and retainer plate (8). 5 - Remove the boot (9) and remove the O-ring (10). RKSA2380 SK714-5 SK815-5 SK815-5 turbo 20-23...
  • Page 156 « P P C V A L V E C L E A R A N C E ADJUSTMENT»). Joint: 112.8±14.7 Nm Screws: 13.2±1.5 Nm ★ Lubricate the stoppers (13). 20-24 SK714-5 SK815-5 SK815-5 turbo...
  • Page 157 ★ During this adjustment, take care not to activate any of the push-rods (4) individually. 4 - Secure this position by tightening the retaining nut (2) to the specific torque. ± 15 Nm Retaining nut: 113 RKS01700 SK714-5 SK815-5 SK815-5 turbo 20-25...
  • Page 158 1 - Lower the LH safety bar (1) and adjust the position of the sensor (2) by loosening and tightening the adjustment nuts (3). ★ Distance between safety bar and sensor: 1 mm RKSA0140 RKS01260 20-26 SK714-5 SK815-5 SK815-5 turbo...
  • Page 159 2 - Loosen the retaining screws (1) of the wheel hub until it can move. 3 - Gradually tighten the screw A until correct tension has RKSA0170 been restored to the chain. 4 - Tighten the nuts (1). Nuts: 200 Nm SK714-5 SK815-5 SK815-5 turbo 20-27...
  • Page 160 RKS01291 • The control valve consists of the spools that command: Command Ports Arm (Lower - Raise) A1 - B1 Bucket (Dump - Curled) A2 - B2 Equipment (R.H. - L.H.) A3 - B3 RKS01130 20-28 SK714-5 SK815-5 SK815-5 turbo...
  • Page 161 (2). – 27.4 Nm Plugs: 19.6 BOTTOM VIEW RKS01310 2. Check the working pressure of the AS valve (Only for SK815-5 and SK815-5 turbo) ★ Test conditions: • Engine: high idling – 55 °C. • Hydraulic oil temperature: 45 •...
  • Page 162 Nut: 58.8 Section A - A RKS01340 2. AS valve calibration (only for SK815-5 and SK815-5 turbo) • Pressure adjustment at low idling 1 - Loosen the nut (1), and adjust the working pressure of the AS valve (with the engine at low idling), proceeding as follows: •...
  • Page 163 ★ One complete turn of the screw (4) varies the pres- sure by 1.96 bar. Section A - A 3 - Tighten the nut (3) and check that the working pressure RKS01361 remains within permissible limits. – 58.8 Nm Nut: 34.3 SK714-5 SK815-5 SK815-5 turbo 20-31...
  • Page 164 4 - Travel for 10 metres, then measure the deviation of the machine over the next 20 metres. 5 - Check the deviation also in reverse gear and while ac- celerating in both directions. Theoretical line of travel Measure the of the deviation RKS01281 20-32 SK714-5 SK815-5 SK815-5 turbo...
  • Page 165 2 - Loosen the nut (1) and tighten the screw (2). RKS01370 ★ A 60° turn of the screw (2) will reduce the deviation by about 500 mm. SK815-5 SK815-5 turbo 3 - Tighten the nut (1). – 32.4 Nm Nut: 26.5 RKS01380 RKS01390 SK714-5 SK815-5 SK815-5 turbo 20-33...
  • Page 166 2 - Lock the nut (2). ± 10 Nm Nut: 69 ★ After adjustment, check the adjustment of the main relief valve with the same procedures as used for Section A - A RKS01400 the measurements. 20-34 SK714-5 SK815-5 SK815-5 turbo...
  • Page 167 (1). ★ During travel in one direction, two actuators are never- theless activated. Always check both pressures: Action involved Action ❍ ❍ FORWARD RKS01410 ❍ ❍ REVERSE ❍ ❍ RIGHT ❍ ❍ LEFT SK714-5 SK815-5 SK815-5 turbo 20-35...
  • Page 168 4 - Start the engine and rev it up to operating speed (2800 rpm) with all the levers in neutral position. 5 - Lower the safety bars; operate the parking brake control and check the pressure. ★ Parking brake pressure: Min. 22 bar RKSA1480 20-36 SK714-5 SK815-5 SK815-5 turbo...
  • Page 169 2 - Stop the engine, loosen the tank cap (1) and then close it again. ★ This operation lets air into the tank when the level of the remaining oil is at minimum. RKS01420 3 - Start the engine and lower the working equipment to the ground. SK714-5 SK815-5 SK815-5 turbo 20-37...
  • Page 170 3 - Replace the cap (1). ★ After filling the casing, start the engine and allow it to run at low idling for about 10 minutes before pro- ceding to bleed the air from the circuits. RKSA1050 20-38 SK714-5 SK815-5 SK815-5 turbo...
  • Page 171 1 - Each time an item of optional working equipment is in- stalled, operate the equipment repeatedly, with the en- gine at low idling, until all air has been completely eliminated. RKS01520 SK714-5 SK815-5 SK815-5 turbo 20-39...
  • Page 173 Installation ..............50 INJECTION PUMP RAISING CYLINDER Removal ..............18 Removal and installation ..........51 Installation ............... 20 BUCKET CYLINDER CYLINDER HEAD (SK714-5 SK815-5) Removal ..............52 Removal ..............21 Installation ..............53 Installation ............... 22 WORK EQUIPMENT CYLINDERS CYLINDER HEAD (SK815-5 turbo) Disassembly .............54 Removal ..............
  • Page 174 PAGE INTENTIONALLY LEFT BLANK...
  • Page 175 OIL OR LIQUIDS TO BE INTRODUCED», «SCREW LOCKING MATERIAL, SEALANTS AND LUBRICA- TION», «LUBRICATING GREASE». NOTE If no symbol is indicated, the values to be used are those given in the introductory sections of this manual. SK714-5 SK815-5 SK815-5 turbo 30-3...
  • Page 176 ★ For details, see «20. TESTING AND ADJUSTMENTS». • After having re-assembled cylinder joints or cylinders, or work equipment articulations, lubricate thoroughly. 30-4 SK714-5 SK815-5 SK815-5 turbo...
  • Page 177 2 - While keeping the hood lifted, remove the retainer nut (4) from the shock absorber (5). Engine hood: 15 kg INSTALLATION OF ENGINE HOOD RKSA1800 • To replace, reverse removal procedure. ★ Check the centre and the lock engagement adjust- ment. SK714-5 SK815-5 SK815-5 turbo 30-5...
  • Page 178 ★ To disconnect the pipes, remove the retainer (9), push the pipe (6) completely inside the union (10) and extract the pipe (6). ★ Mark the tubes to avoid exchanging them during re- assembly. RKSA0261 30-6 SK714-5 SK815-5 SK815-5 turbo...
  • Page 179 (18), and dis- connect them from the pins (19). Apply a slight tension to the hoisting-tackle chains 16 17 to prevent the cab from moving unexpectedly. 16 17 RKSA0283 SK714-5 SK815-5 SK815-5 turbo 30-7...
  • Page 180 (For details, see «20. TESTING AND ADJUST- MENTS»). 1 - Fill up the cooling circuit. 2 - Start the engine to circulate the liquid through all cir- cuits. 3 - Stop the engine and check the level. 30-8 SK714-5 SK815-5 SK815-5 turbo...
  • Page 181 (5). RKSA0320 3 - Tilt the battery clamp (5) towards the front of the ma- chine and lift out the battery. RKSA0330 INSTALLATION OF THE BATTERY • To replace, reverse removal procedure. SK714-5 SK815-5 SK815-5 turbo 30-9...
  • Page 182 3 - Disconnect the cables (2) and (3). 4 - Loosen the screws (4) and take out the starting motor (5). RKSA0340 INSTALLATION OF THE STARTING MOTOR • To install, reverse removal procedure. 78.4–98 Nm Screws: 30-10 SK714-5 SK815-5 SK815-5 turbo...
  • Page 183 5 - Free the pulley (6) from the fan-belt and take out the al- ternator (7). RKSA0360 INSTALLATION OF THE ALTERNATOR • To install, reverse removal procedure. ★ Adjust the tension of the fan-belt. (For details, see «20. TESTING AND ADJUSTMENTS – Adjustment of the fan-belt tension»). SK714-5 SK815-5 SK815-5 turbo 30-11...
  • Page 184 REMOVAL AND INSTALLATION MUFFLER (SK714-5 SK815-5) REMOVAL OF THE MUFFLER (SK714-5 SK815-5) 1 - Loosen the screws (1), remove the support (2) and the protection (3). 2 - Loosen the screws (4) of muffler support (5) and remove RKSA1870 3 - Loosen the screws (6) of muffler support (7) and remove RKSA0381 4 - Loosen nut (8) and remove muffler (9).
  • Page 185 REMOVAL AND INSTALLATION MUFFLER (SK815-5 turbo) REMOVAL OF THE MUFFLER (SK815-5 turbo) 1 - Loosen the screws (1) of protection (2) and remove it. RKSA2490 2 - Loosen and remove the screws (3) fixing the muffler (4). RKSA2500 3 - Mark the position of bracket (5).
  • Page 186 REMOVAL AND INSTALLATION TURBOCHARGER (SK815-5 turbo) REMOVAL OF TURBOCHARGER (SK815-5 turbo) 1 - Remove the muffler. (For details see «REMOVAL OF MUFFLER»). 2 - Remove the insulating shield (1) from the intake man- ifold. RKSA2460 3 - Loosen clamps (2), (3) and disconnect the intake hose (5) and supply hose (6) from the turbocharger (4).
  • Page 187 TURBOCHARGER (SK815-5 turbo) 6 - Loosen the nuts (12) and remove the turbocharger (4). ★ The seal (13) must be replaced at each disassem- bly. RKSA2340 INSTALLATION OF TURBOCHARGER • To install, reverse removal procedure. SK714-5 SK815-5 SK815-5 turbo 30-15...
  • Page 188 3 - Loosen the clamp (4) and disconnect the connector (5) from the air filter clogging sensor. 4 - Loosen the screws (6) and remove the complete air filter (7). RKSA1890 SK815-5 turbo INSTALLATION OF AIR INTAKE FILTER • To install, reverse removal procedure. RKSA2530 30-16 SK714-5 SK815-5 SK815-5 turbo...
  • Page 189 3 - Loosen nuts (4) and remove clips (5). RKSA0042 4 - Remove the complete injection nozzles (6). INSTALLATION OF THE NOZZLE HOLDER • To install, reverse the removal procedure. High-pressure pipe union: 31.85±2.45 Nm Nuts: 78.4±0.98 Nm RKSA0401 SK714-5 SK815-5 SK815-5 turbo 30-17...
  • Page 190 2 - Disconnect connector (1) and accelerator cable (2). RKSA0770 SK714-5 SK815-5 3 - Remove the air filter (3). (For details, see «REMOVAL OF AIR FILTER»). 4 - Only for SK714-5 SK815-5 Disconnect from head cylinder the fuel filter support (4) with level oil rod. RKSA1892 SK815-5 turbo...
  • Page 191 (X2) directly in the gear (13). ★ During removal be careful not let key drop (14) in the housing. RKS01730 11 - Disconnect spring (15), loosen nuts (16) (No. 3) and re- move injection pump (5) with O-rings (17). RKSA0430 SK714-5 SK815-5 SK815-5 turbo 30-19...
  • Page 192 Screw: 44.1–53.9 Nm ★ Align marks among gears before to install pump and nut. Nut: 59–69 Nm Pump lock nuts: 22.5–28.5 Nm ★ Check fuel injection timing. (For details, see «20. CONTROLS AND ADJUST- MENTS»). 30-20 SK714-5 SK815-5 SK815-5 turbo...
  • Page 193 REMOVAL AND INSTALLATION CYLINDER HEAD (SK714-5 SK815-5) REMOVAL OF THE CYLINDER HEAD (SK714-5 SK815-5) \ Disconnect the negative terminal cable (–) from the battery. ★ Drain the engine coolant. Coolant: max. 9 1 - Remove the water coolant pump. (For details, see «REMOVAL OF WATER COOLANT PUMP»).
  • Page 194 REMOVAL AND INSTALLATION CYLINDER HEAD (SK714-5 SK815-5) INSTALLATION OF THE CYLINDER HEAD (SK714-5 SK815-5) • To install, reverse the removal procedure. 1 - Fill up the cooling circuit. Coolant: approx. 2 - Start the engine to circulate the liquid through all cir- cuits.
  • Page 195 REMOVAL AND INSTALLATION CYLINDER HEAD (SK815-5 turbo) REMOVAL OF THE CYLINDER HEAD (SK815-5 turbo) \Disconnect the negative terminal cable (–) from the battery. ★ Drain the engine coolant. max. 9 Coolant: 1 - Remove the water coolant pump. (For details, see «REMOVAL OF WATER COOLANT PUMP»).
  • Page 196 REMOVAL AND INSTALLATION CYLINDER HEAD (SK815-5 turbo) INSTALLATION OF THE CYLINDER HEAD (SK815-5 turbo) • To install, reverse the removal procedure. 1 - Fill up the cooling circuit. Coolant: approx. 2- Start the engine to circulate the liquid through all cir- cuits.
  • Page 197 AND ADJUSTMENTS – Testing and adjustment of the fan-belt »). Fan screws: 9.8–11.8 Nm ★ A new seal (7) and new O-ring (8) must be fitted each time the pump is removed. Pump screws: 22.5–28.5 Nm SK714-5 SK815-5 SK815-5 turbo 30-25...
  • Page 198 8 - Disconnect the reversing siren connector (10). RKSA0480 9 - Disconnect the pipes (11) and (12) and remove the complete group (8). RKSA0490 30-26 SK714-5 SK815-5 SK815-5 turbo...
  • Page 199 4 - Stop the engine, check the levels and, if necessary, top them up. Screws: 190 Nm 5 - Pressurise the tank and bleed the air from all circuits. (For details, see «20. TESTING AND ADJUST- MENTS»). SK714-5 SK815-5 SK815-5 turbo 30-27...
  • Page 200 REMOVAL AND INSTALLATION FUEL TANK (SK714-5 SK815-5) REMOVAL OF THE FUEL TANK (SK714-5 SK815-5) ★ Drain the fuel. Fuel: max 38 1 - Remove the screws (1) and loosen the screws (2), leav- ing them in place. RKSA0451 2 - Disconnect the delivery (5) and return (6) pipes from the prefilter (3) and the filter (4).
  • Page 201 REMOVAL AND INSTALLATION FUEL TANK (SK815-5 turbo) REMOVAL OF THE FUEL TANK (SK815-5 turbo) ★ Drain the fuel. Fuel: max. 50 1 - Remove the screws (1) and loosen the screws (2), leav- ing them in place. RKSA0451 2 - Disconnect the connector (3) from the level sensor and disconnect the connector from the reverse gear chime, if installed.
  • Page 202 REMOVAL AND INSTALLATION FUEL TANK (SK815-5 turbo) 5 - Loosen the screws (10) and remove the support (11). 6 - Remove the complete tank. RKSA2450 INSTALLATION OF THE FUEL TANK • To install, reverse removal procedure. Screws: 190 Nm 30-30...
  • Page 203 (6) completely inside the union (10) and extract the pipe (6). ★ Mark the tubes to avoid exchanging them during re- assembly. RKSA0540 6 - Pull out the cab cabling (5). RKSA0550 SK714-5 SK815-5 SK815-5 turbo 30-31...
  • Page 204 8 - Disconnect the hose (14) from the washer tank (13). RKSA1901 9 - Disconnect the accelerator command lever cable (16) from the engine (15). RKSA0133 10 - Connect the cab (17) to some hoisting tackle. RKSA0272 30-32 SK714-5 SK815-5 SK815-5 turbo...
  • Page 205 Check the correct connection by trying to extract them. RKSA1240 • Adjust the stroke of the accelerator lever cable. (For details, see «20. TESTING AND ADJUST- MENTS»). SK714-5 SK815-5 SK815-5 turbo 30-33...
  • Page 206 RKSA0301 Oil: max. 39 ★ Drain the fuel. Fuel: SK714-5 SK815-5: max. 38 SK815-5 turbo: max. 50 3 - Remove the radiator group. (For details, see «REMOV- ING THE RADIATOR GROUP»). 4 - Remove the cover of the control unit (1) and disconnect the connectors (2), (3) and (4) that connect the control unit (1) to the frame wiring harness (5).
  • Page 207 ★ Mark the tubes to avoid exchanging them during re- assembly. RKSA0610 11 - Disconnect the pipes (22), (23), (24), and (25) from the pump. ★ Mark the tubes to avoid exchanging them during re- assembly. RKSA0230 SK714-5 SK815-5 SK815-5 turbo 30-35...
  • Page 208 13 - Attach the engine-pump group to some hoisting tackle and apply a slight tension to the cables. 14 - Loosen the four nuts (28) that secure the engine and re- move the complete group. Engine-pump group: 290 kg RKSA0622 30-36 SK714-5 SK815-5 SK815-5 turbo...
  • Page 209 3 - Fill the fuel tank and bleed the air from the system. (For details, see «20. TESTING AND ADJUSTMENTS»). Fuel: SK714-5 SK815-5: max. 38 SK815-5 turbo: max. 50 4 - Start the engine to circulate the oil and coolant liquid and check that there are no leaks.
  • Page 210 2 - Disconnect the pipes (5), (6), (7), and (8) from the pump. ★ Mark the tubes to avoid exchanging them during re- assembly. RKSA0231 3 - Disconnect the servo-control pressure sensor connec- tors (9) and disconnect the support (10) from the en- gine. RKSA0601 30-38 SK714-5 SK815-5 SK815-5 turbo...
  • Page 211 6 - Loosen the eight screws (14) and remove the pump (1) complete with the flange (15). Pump: 88 kg 7 - Loosen the screws (16) and disconnect the pump (1) from the flange (15). RKSA0651 SK714-5 SK815-5 SK815-5 turbo 30-39...
  • Page 212 3 - Stop the engine, check the levels and, if necessary, top them up. 4 - Bleed the air from the hydraulic circuits and pressurise the tank. (For details, see «20. TESTING AND ADJUST- MENTS»). 30-40 SK714-5 SK815-5 SK815-5 turbo...
  • Page 213 HIGHFLOW version. RKSA0660 2 - Loosen the two screws (4) and remove the pump (1) complete with the O-ring (5). RKS01740 INSTALLATION OF THE GEAR PUMP ★ To install, reverse removal procedure. Screws: 59–74 Nm SK714-5 SK815-5 SK815-5 turbo 30-41...
  • Page 214 2 - Take out the screws (1) and remove the coupling (2). ★ Replace screws (1) every dismantling. RKSA0670 INSTALLATION OF THE ENGINE-PUMP COUPLING • To install, reverse the removal procedure. Coupling screws: 80 Nm 30-42 SK714-5 SK815-5 SK815-5 turbo...
  • Page 215 2 - Start the engine at low idling to circulate the oil through- out the system. 3 - Pressurise the tank and bleed the air from all circuits. (For details, see «20. TESTING AND ADJUST- MENTS»). SK714-5 SK815-5 SK815-5 turbo 30-43...
  • Page 216 R.H. AND L.H. PPC VALVES PATTERN CHANGE RIGHT-HAND PPC VALVE Posizione White White Yellow Yellow If the union pieces are dismantled from the PPC valves, make sure that a union with a filter is mounted at the P in- let. RKSA0720 30-44 SK714-5 SK815-5 SK815-5 turbo...
  • Page 217 ★ To facilitate oil drainage, remove the vent plug (4). RKSA1190 4 - Loosen the nuts (5) and take off the cover (6). ★ Check the condition of the seal (7) and install a new one if necessary. RKSA0740 SK714-5 SK815-5 SK815-5 turbo 30-45...
  • Page 218 1 - Adjust the tension of the chains. (For details, see «20. TESTING AND ADJUST- MENTS»). 2 - Fill the oil up to maximum level. Oil level Nuts: 235 Nm RKS01771 30-46 SK714-5 SK815-5 SK815-5 turbo...
  • Page 219 ★ Place the wheel hub (1) on two supports “A”, about 520 mm high. 6 - Remove the inner ring (7). 7 - Proceed with the extraction of the axle shaft (6) until it is released from the bearing (8). RKS01860 SK714-5 SK815-5 SK815-5 turbo 30-47...
  • Page 220 3 - Check that the measurement X lies within the permis- sible limits. ★ Grease the bearings (7) and (8). Bearings: Lithium EP NLGI 2 ★ Grease the lip of the seal ring (9). Seal ring: Lithium EP NLGI 2 30-48 SK714-5 SK815-5 SK815-5 turbo...
  • Page 221 5 - Loosen the 10 screws (6) and take out the complete final drive (2). ★ Check the condition of the O-ring (7) and substitute a new one if necessary. Final drive: 54 kg RKSA0850 SK714-5 SK815-5 SK815-5 turbo 30-49...
  • Page 222 REMOVAL AND INSTALLATION FINAL DRIVE INSTALLATION OF THE FINAL DRIVE • To install, reverse removal procedure. ★ Grease the O-ring. O-ring: Lithium EP NLGI 2 Screws: 120 Nm Screws: Loctite 270 30-50 SK714-5 SK815-5 SK815-5 turbo...
  • Page 223 RKSA0880 1 - Start the engine and bleed the air from the cylinder. (For details, see «20. TESTING AND ADJUSTMENTS»). ★ After bleeding the air, check the level of oil in the tank. RKSA0890 SK714-5 SK815-5 SK815-5 turbo 30-51...
  • Page 224 ★ Mark the tubes to avoid exchanging them during re- assembly. RKSA0920 3 - Remove the pin (6) and take away the cylinder (3). ★ Check and make a note of the position of the ad- justments to a given clearance. RKSA0930 30-52 SK714-5 SK815-5 SK815-5 turbo...
  • Page 225 1 - Start the engine and bleed the air from the cylinder. (For details, see «20. TESTING AND ADJUSTMENTS»). ★ After bleeding the air, check the level of oil in the tank MAX 1mm RKS01790 SK714-5 SK815-5 SK815-5 turbo 30-53...
  • Page 226 3 - Attach the special wrench C (adjusted to fit the cylinder) to the head (3) and apply the dynamometric tool D. RKSA1070 4 - Unscrew the head (3) and extract it completely from the cylinder (2). RKSA1080 30-54 SK714-5 SK815-5 SK815-5 turbo...
  • Page 227 ★ Socket wrench measurement: 32 mm 10 - Take all the groups to pieces and remove all the seals, guard rings and guide rings. The seals, guard rings, and guide rings cannot be used again. RKSA1100 SK714-5 SK815-5 SK815-5 turbo 30-55...
  • Page 228 3 - Using the tool G, mount the lip-seal (9). ★ Check that the lips face into the cylinder. RKSA1120 4 - Mount the O-ring (10), the anti-extrusion ring (11) and the O-ring (12) onto the cylinder head (3). 11 12 RKS01800 30-56 SK714-5 SK815-5 SK815-5 turbo...
  • Page 229 3 - Mount the pilot boss L adapted to the diameter onto the extremity of the piston rod. 4 - Slide the head (3) onto the piston rod (4). 5 - Remove the pilot boss L from the extremity of the piston rod. RKSA1160 SK714-5 SK815-5 SK815-5 turbo 30-57...
  • Page 230 3 - Lubricate the threading and the first part of the cylinder (2). Cylinder: Lithium EP NLGI 2 4 - Mount the two halves of the tool M, adapted to the di- ameter, onto the mouthpiece of the cylinder (2). RKSA1180 30-58 SK714-5 SK815-5 SK815-5 turbo...
  • Page 231 (3) fully home. Head: ± 41 Nm • Raising cylinder: 412 ± 44 Nm • Bucket cylinder: 441 12 - Mount the guard rings (1) on both sides of the cylinder and the piston rod. RKSA1071 SK714-5 SK815-5 SK815-5 turbo 30-59...
  • Page 232 2 - Disconnect the electrical outlet (6) and its wiring from the boom (5). RKSA0970 3 - Attach the complete boom to some hoisting tackle and raise it until the hoses (7) connected to the frame be- come easily accessible. RKSA0940 30-60 SK714-5 SK815-5 SK815-5 turbo...
  • Page 233 1 - Start the engine to circulate the oil, and bleed the air from the circuits. ★ After bleeding the air, stop the engine and check the level of oil in the tank. MAX 1mm RKS01810 SK714-5 SK815-5 SK815-5 turbo 30-61...
  • Page 234 When aligning the positions between the hole and the pin, run the engine at low idling. ATTENTION! Do not insert fingers into the holes to check alignment. Inside the bushings: Lithium EP MS2 NLGI 2 30-62 SK714-5 SK815-5 SK815-5 turbo...
  • Page 235 P.T.O................. 2 Transmission ............. 3 Final drive ..............4 Hydraulic pump............5 Control valve.............. 8 R.H. PPC valve............14 L.H. PPC valve ............15 Pattern change valve (Optional) ......17 Cylinders..............18 Working equipment..........20 40-1 SK714-5 SK815-5 SK815-5 turbo...
  • Page 236 STANDARD MAINTENANCE P.T.O. P.T.O. 80 Nm 80 Nm 195 Nm RKS01091 40-2 SK714-5 SK815- SK815-5 turbo5...
  • Page 237 STANDARD MAINTENANCE TRANSMISSION TRANSMISSION 294 Nm 200 Nm 118 Nm with Loctite 270 29 Nm 186 Nm Sectione A - A RKS01440 SK714-5 SK815-5 SK815-5 turbo 40-3...
  • Page 238 FINAL DRIVE 46 – 51 Nm 167 – 196 Nm 61.8 – 75.5 Nm 28.4 – 31.4 Nm 28.4 – 31.4 Nm 28.4 – 31.4 Nm 51.0 – 64.7 Nm 28.4 – 31.4 Nm RKS01480 40-4 SK714-5 SK815- SK815-5 turbo5...
  • Page 239 STANDARD MAINTENANCE HYDRAULIC PUMP HYDRAULIC PUMP SK714-5 147 – 186.2 Nm 19.6 – 27.4 Nm 58.8 – 73.5 Nm 49 – 58.8 Nm 147 – 186.2 Nm 19.6 – 27.4 Nm RKS00330 SK714-5 SK815-5 SK815-5 turbo 40-5...
  • Page 240 STANDARD MAINTENANCE HYDRAULIC PUMP SK815-5 – SK815-5 turbo 19.6 – 27.4 Nm 147 – 186.2 Nm 58.8 – 73.5 Nm 19.6 – 27.4 Nm 49 – 58.8 Nm 19.6 – 27.4 Nm 147 – 186.2 Nm 58.8 – 73.5 Nm...
  • Page 241 Check item Remedy Free Installed Installed Free Installed length length load length load Spring 38.1 52 N – 41.1 N 25.9 16.7 N – 13.7 N Replace Spring Spring 40.2 34.5 73.5 N – 58.8 N SK714-5 SK815-5 SK815-5 turbo 40-7...
  • Page 242 STANDARD MAINTENANCE CONTROL VALVE CONTROL VALVE SK815-5 – SK815-5 turbo (SUPER HIGH-FLOW VERSION) ± 23.5 3.9 Nm ± 11.3 1.5 Nm ± 11.3 1.5 Nm ± 31.9 2.5 Nm ± 11.3 1.5 Nm ± 31.9 2.5 Nm ± 31.9 2.5 Nm ±...
  • Page 243 STANDARD MAINTENANCE CONTROL VALVE SK714-5 / SK815-5 – SK815-5 turbo (STANDARD) ± 11.3 1.5 Nm ± 31.9 2.5 Nm ± 11.3 1.5 Nm ± 11.3 1.5 Nm ± 31.9 2.5 Nm ± 31.9 2.5 Nm ± 23.5 3.9 Nm ±...
  • Page 244 25.5 131.4 N – 105.1 N Spool return spring (High-Flow) deformation 14.7x4.4 4.9 N – 3.9 N Spool return spring (float) Spring of series - parallel circuit 38.3x15.2 161.8 N – 129.5 N switching valve 40-10 SK714-5 SK815- SK815-5 turbo5...
  • Page 245 Spring of leveling circulating valve 37.5x15.4 22.5 66.7 N – 53.4 N Spring of flow divider 30.2x9.4 2.9 N – 2.4 N 18.5x3.8 15.5 1.1 N – 0.9 N Spring of check valve SK714-5 SK815-5 SK815-5 turbo 40-11...
  • Page 246 (outside Ø) heigh load length load 13x6.5 2.0 N – 1.6 N Change Spring of check valve springs. If there are Spool return spring damage 25.7x11.1 66.7 N – 53.4 N (High-Flow joining circuit) deformation 40-12 SK714-5 SK815- SK815-5 turbo5...
  • Page 247 59.2 N deformation 18.7x9.3 3.4 N – 2.7 N Spring of unload valve Spring of pressure 15.4x6 2.5 N – 2.0 N compensation valve Spring of pressure 20x8.4 6.9 N – 5.5 N compensation valve SK714-5 SK815-5 SK815-5 turbo 40-13...
  • Page 248 Centering spring (for P1 and P2) 36.6x15.5 17.6 N – 16.5 N deformation Metering spring (for P3 and P4) 32.7x8.2 25.6 40.8 N – 39.4 N 26.2x8.2 25.3 5.3 N – 4.3 N Metering spring (for P1 and P2) 40-14 SK714-5 SK815- SK815-5 turbo5...
  • Page 249 9.8 N – 9.2 N damage (for Pout3 and Pout4) deformation Centering spring 26.2x15.5 17.6 N – 16.5 N (for Pout1 and Pout2) Metering spring (for P3 and P4) 32.7x8.2 25.3 5.3 N – 52.4 N SK714-5 SK815-5 SK815-5 turbo 40-15...
  • Page 250 9.8 N – 9.2 N damage (for Pout3 and Pout4) deformation Centering spring 36.6x15.5 17.6 N – 16.5 N (for Pout1 and Pout2) Metering spring (for P3 and P4) 26.2x8.2 25.3 5.3 N – 52.4 N 40-16 SK714-5 SK815- SK815-5 turbo5...
  • Page 251 STANDARD MAINTENANCE PATTERN CHANGE VALVE (OPTIONAL) PATTERN CHANGE VALVE (OPTIONAL) 27.5 – 34.3 Nm Section B - B Section A - A 11.8 – 14.7 Nm 27.5 – 34.3 Nm RKS00941 SK714-5 SK815-5 SK815-5 turbo 40-17...
  • Page 252 –0.05 + 0.134 0.184 -- 0.025 + 0.039 0.025– 0.426 Lifting bucket -- 0.087 0.126 Tolerance between Replace piston rod and head -- 0.020 + 0.033 0.020– cylinder head 0.426 Tilt bucket -- 0.072 0.105 40-18 SK714-5 SK815- SK815-5 turbo5...
  • Page 253 PAGE INTENTIONALLY LEFT BLANK...
  • Page 254 STANDARD MAINTENANCE WORKING EQUIPMENT WORKING EQUIPMENT Section A - A Section C - C Section B - B RKS01121 40-20 SK714-5 SK815- SK815-5 turbo5...
  • Page 255 + 0.072 0.082– Clearance between bushing and mounting pin of arm and support frame –0.05 + 0.134 0.184 Replace bushing –0.01 + 0.072 0.082– Clearance between bushing and mounting pin of arm –0.05 + 0.134 0.184 SK714-5 SK815-5 SK815-5 turbo 40-21...
  • Page 258 2003...

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