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Document Title:
Power
transmission,
description
Profile:
EXC, EC360C HR [GB]
Power transmission, description
The excavator's power transmission is a generic name of all components that transmit motive force to perform the various
functions of the excavator. The mechanical power from the engine transmitted via the pump coupling is converted to
hydraulic power by the main pumps. Hydraulic power from the main pump goes to the travel motors, slew motor and
hydraulic cylinders via the main control valve, where it is converted back to mechanical power, that actuates the travel
action, slew action and attachments. The reduction gears of the planetary mechanisms convert the high speed rotation of
the hydraulic motor into low speed, high torque rotating force, at the track unit / sprocket for travel, and at the slew unit /
ring gear for slewing. The center passage 360° rotating unit allows high pressure hydraulic flow from the main control valve
to the track motors. The unit rotates with the superstructure without twisting hoses therefore oil flow is not obstructed by
slewing.
Function Group:
400
Information Type:
Service Information
Service Information
Date:
2015/4/21
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Summary of Contents for Volvo EC360CHR
- Page 1 Service Information Document Title: Function Group: Information Type: Date: Power transmission, Service Information 2015/4/21 description Profile: EXC, EC360C HR [GB] Power transmission, description The excavator's power transmission is a generic name of all components that transmit motive force to perform the various functions of the excavator.
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Page 2: Service Information
Service Information Document Title: Function Group: Information Type: Date: Track gearbox, description Service Information 2015/4/21 Profile: EXC, EC360C HR [GB] Track gearbox, description Track gearbox consists of three stage planetary mechanism that converts the high speed rotation of the hydraulic motor, into low speed, high torque rotating force at the sprocket hub. - Page 3 Figure 2 Port connections Oil filling port (PF 1/2) Oil drain port (PF 1/2) Port connections Port symbol Port size Port A, B ø25 Oil supply (Return) Am, Bm 9/16–18 UNF-2B Pressure measurement port 9/16–18 UNF-2B Displacement change pilot port 9/16–18 UNF-2B Port for manual release of brake 7/8-14 UNF-2B...
- Page 4 Figure 3 Track gearbox, sectional view 1 Housing 15 Spring pin 29 Planetary gear_no.1 2 Bearing_main 16 Ring_thrust 30 Needle Bearing 3 Seal_floating 17 Gear_sun no.3 31 Washer_thrust 4 Retainer 18 Carrier_assy no.2 32 Pin_No.1 5 Shim 19 Carrier_no.2 33 Spring pin 6 Screw_M12X30 20 Planetary gear_no.2 34 Ring_thrust...
- Page 5 Figure 4 Track gearbox, torque flow At this time, the reduction ratio of reduction gear is as follows: (1) Reduction ratio i = [(Zs1 + Zr) · (Zs2 + Zr)· (Zs3 + Zr) / (Zs1 · Zs2 · Zs3)] - 1 ...
- Page 6 Service Information Document Title: Function Group: Information Type: Date: Track gearbox, precautions Service Information 2015/4/21 for operation Profile: EXC, EC360C HR [GB] Track gearbox, precautions for operation Installation Figure 1 Mounting location Main body mounted area Sprocket mounted area Check that the mating mount surfaces are clean.
- Page 7 Use a gear oil equivalent to one of the following two criteria. API classification GL–4 or GL–5, SAE 90. Gear oil replacement period First (initial) oil replacement: 500 operating hours Subsequent oil replacement: 2000 operating hours After maintenance (initial): 500 operating hours NOTE! Regardless of the operating hours the gear oil must be replaced at least once per year.
- Page 8 The temperature of the case must be lower than 90 °C, during continuous operation.
- Page 9 Service Information Document Title: Function Group: Information Type: Date: Track gearbox, Service Information 2015/4/21 maintenance standard Profile: EXC, EC360C HR [GB] Track gearbox, maintenance standard The parts are precision finished and must be handled carefully. Keep the parts of carrier ass'y together, do not mix the bearings, gears, pins and thrust washers. Seals Replace the seals and O-rings, although they appear not damaged.
- Page 10 Wait a few minutes until all the oil is drained and then proceed to screw on the plugs. Proceed with the oil fill-up following the procedures given. NOTE! Never mix mineral oils with synthetic oils and vice versa. Do not dispose of the oil in the natural environment but be careful to eliminate it in compliance with the relative rules and regulations that govern locally.
- Page 11 Figure 3 Floating seal assembly jig...
- Page 12 Service Information Document Title: Function Group: Information Type: Date: Track gearbox, disassembly Service Information 2015/4/21 Profile: EXC, EC360C HR [GB] Track gearbox, disassembly Precautions Thoroughly clean the gearbox assembly prior to disassembly. Select a clean work area. Match mark attached components to indicate proper positioning during reassembly.
- Page 13 Figure 2 Removal, bolts and cover Tools: Socket 30 mm NOTE! Carefully lift the cover off. Remove retaining ring (1) and then remove sun gear_No.1 (2). Figure 3 Removal, sun gear No.1 Remove carrier assembly No.1 (1).
- Page 14 Figure 4 Removal, carrier assembly No.1 Disassembling carrier assembly No.1 Figure 5 Disassembly, carrier assembly No.1 Tap spring pin (1) into pin No.1 (2). Remove washer_thrust (3), planetary gear No.1 (5) and bearing_needle (7) from carrier_No.1 (5). Tools: Eye bolt (M10), Hammer WARNING The parts are heavy.
- Page 15 Figure 6 Exploded view, planetary gear No.1 assembly NOTE! Match mark gears (5), pins (2) and carrier (6). NOTE! Do not mix the gears, bearings, washer_thrusts, and pin. NOTE! Do not reuse pin_springs (1). NOTE! If there are any flakes at the surface of pin No.1, replace pin No.1, carrier No.1, planetary gear No.1 and bearing_needle simultaneously.
- Page 16 Figure 8 Removal, carrier assembly No.2 Disassembling carrier assembly No.2 Figure 9 Removal, carrier assembly No.2 Tap spring pin (5) into pin No.2 (3). Remove washer_thrust (6), planetary gear No.2 (1) and bearing_needle (2) from carrier_No.2 (4). Tools: Eye bolt (M10), Hammer WARNING The parts are heavy.
- Page 17 Figure 10 Exploded view, planetary gear No.2 assembly NOTE! Match mark gears (1), pins (3) and carrier (4). NOTE! Do not mix the gears, bearings, washer_thrusts, and pin. NOTE! Do not reuse pin_springs (5). NOTE! If there are any flakes at the surface of pin No.2, replace pin No.2, carrier No.2, planetary gear No.2 and bearing_needle simultaneously.
- Page 18 Figure 12 Removal, carrier assembly No.3 Tap spring pin (6) into pin No.3 (3). Remove washer_thrust (7), planetary gear No.3 (1) and bearing_needle (2) from carrier_No.3 (5). Remove ring_thrust. Tools: Eye bolt (M10), Hammer WARNING The parts are heavy. Take appropriate safety precautions. Figure 13 Exploded view, planetary gear No.3 assembly NOTE!
- Page 19 Download the full PDF manual instantly. Our customer service e-mail: aservicemanualpdf@yahoo.com...
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