SKF FlowMaster II User And Maintenance Instructions
Rotary driven hydraulic pump
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Summary of Contents for SKF FlowMaster II
- Page 1 User and maintenance instructions FlowMaster II rotary driven hydraulic pump Caterpillar model 434-3374 400 lb series “B” (85777) Date of issue July 2023 Form number 404543 Version...
- Page 2 Contents Declaration of Incorporation * U K Declaration of Incorporation * Safety * Overview Appropriate use Description Inspection Damaged pumps Pump specifications Install pump Operation Set pump manifold flow control Flow control valve adjustment Crankcase oil service interval Disassembly Pump Crank rod and eccentric Reciprocating tube Crank rod...
- Page 3 – 1 3 6 – 1 3 7 – 1 3 8 – 1 5 3 – 1 5 4 – Name: components 1 7 1 – 1 7 1 1 – 1 7 3 – 1 7 4 FlowMaster II - Caterpillar branded Model number(s): 434-3374 EN ISO 12100: 2010 The manufacturer maintains a technical file...
- Page 4 – 1 3 6 – 1 3 7 – 1 3 8 – 1 5 3 – 1 5 4 – Name: components 1 7 1 – 1 7 1 1 – 1 7 3 – 1 7 4 FlowMaster II - Caterpillar branded Model number(s): 434-3374 EN ISO 12100: 2010 The manufacturer maintains a technical file...
- Page 5 Safety * Explanation of signal CAUTION Do not operate equipment without words for safety wearing personal protective gear The assembly must be installed, maintained Wear eye protection Protective and repaired exclusively by persons familiar equipment such as dust mask, non-skid with the instructions safety shoes, hard hat, or hearing pro- NOTE...
- Page 6 This manual details procedures that must be FlowMaster II rotary driven hydraulic pump and discharged to outlet port followed while installing, operating and is a fully hydraulically operated adjustable...
- Page 7 Diagram 1 Item number Description Hydraulic fluid inlet port SAE 4 ORB Hydraulic fluid return to tank SAE 6 ORB Hydraulic motor Lube outlet in NPTF Flow control valve Pressure gauge port Hydraulic fluid to vent valve Orifice 0 013 in (0,33 mm) diameter Pressure reducing valve Solenoid valve Diagram 2...
- Page 8 Fig. 1 Dimensions 11.71 in (297 mm) 9.55 in 9.09 in (243 mm) (231 mm) 2.72 in (69 mm) 42.99 in (1 092 mm) 34.06 in (865 mm) Ø 1.25 in (32 mm) 2.25 in (57 mm) 2.25 in (4x) Ø 0.28 in (Ø 7 mm) holes (57 mm) (4x) / -20 threads 3.90 in...
- Page 9 Fig. 2 Key no Nomenclature Hydraulic fluid inlet port SAE 4 ORB Hydraulic fluid return tank SAE 6 ORB Hydraulic motor Pressure reducing valve Flow regulator Solenoid valve Lube outlets NPTF Install pump Fig. 3 NOTE If necessary to drill mounting holes into reservoir cover, refer to Pump was tested in lightweight oil left in to Fig.
- Page 10 Operation WARNING NOTE Do not exceed 400 psi (27 bar) working Fig. 2, page 9 depicts location of hydraulic pressure Use high pressure operating valves for pump 1 Shut off material supply line valve components to reduce risk of serious 2 Turn on hydraulic pressure injury including fluid injection and 3 Energize solenoid on/off valve...
- Page 11 Set pump manifold Crankcase oil service flow control interval • Check the oil level after every 750 hours of machine operation, or monthly NOTE • Change the oil after every 2 000 hours of Pressure must be adjusted to make sure machine operation or every year desired flow setting is achieved Refer to •...
- Page 12 Disassembly 1 Remove retaining ring (48) from pump shaft (40) 2 Remove pump shaft (40) by pushing pump Pump shaft on retaining ring (48) side 3 Remove retaining ring (63) from housing 1 Place pump into a vise tube (60) Refer to Fig. 7 2 Remove dipstick (31) Refer to Fig.
- Page 13 Crank rod and Fig. 10 13 With crank rod in a vise and using special tool (T1) provided in tool kit (276275), eccentric remove plunger link rod (20) Refer to Fig. 11 14 Place end of plunger link rod (20) into hole of special tool (T1) NOTE 15 Align outlet hole of plunger link rod (20)
- Page 14 Reciprocating tube Fig. 13 1 Loosen check seat housing (30) with hex head wrench Refer to Fig. 13 2 Remove check seat housing (30) from recip- rocating tube (25) 3 Remove ball cage (28), check ball (29) and O-ring seal (27) from check seat housing (30) 4 Remove lower bushing (24) from reciprocat- ing tube (25)
- Page 15 Assembly Pump 14 Apply threadlocker to threads of upper bushing and plunger end (10) 1 Install ball (23) into lower bushing and 15 Thread upper bushing and plunger Crank rod and plunger (24) Refer to Fig. 19 end (10) into outlet pin (8) 2 Insert check rod (22) into pump 16 Torque to 110–125 in-lbf (12,4–14,1 Nm) eccentric assembly...
- Page 16 Fig. 18 Fig. 19 21 Insert upper bushing and plunger end (10) into wrist pin anchor (13) and tighten 22 Place wrist pin anchor (13) in a vise 23 Tighten wrist pin anchor (13) to a torque of 20–25 ft-lbf (27–34 Nm) 24 With wrist pin anchor (13) still in vise, align crank rod/eccentric assembly (7) holes with wrist pin anchor (13) holes...
- Page 17 38 Insert o-ring (59) into housing tube (60) 44 While aligning key (39) on shaft (40) with NOTE 39 Refer to Fig. 20, page 16 and place eccentric key way (5), slide shaft (40) into For ease of installation of lower cup, use backup washer (58) into housing eccentric (5) Refer to Fig.
- Page 18 50 Install screws (33) with O-rings (34) into 61 Torque solenoid valve (67) to 73 Line up outlet pin and thread outlet pin pump cover (35) 25–30 ft-lbf (33–40 Nm) nut (55) into pump housing (37) 51 Torque screws (33) to a torque of 10–15 62 Install pressure reducing valve (70) in 74 Torque to 30–35 ft-lbf (40–47 Nm) in-lbf (1,1–1,6 Nm)
- Page 19 Troubleshooting Condition Possible cause Corrective action Pump does not run No pressure on gauge (64) Closed supply line shut off valve Open shut off valve No power to solenoid valve (68) Correct electrical fault Faulty solenoid (68) Replace solenoid (68) Pressure reducing valve (70) is set too low Reset pressure reducing valve (77) Insufficient hydraulic fluid supply...
- Page 20 Fig. IPB 1...
- Page 21 Fig. IPB 2...
- Page 22 Fig. IPB 3...
- Page 23 Parts list Item no Description Part no Quantity Item no Description Part no Quantity Flat head screw, –28 x 1 270635 O-ring 272567 Counter weight 272197 Woodruff key 272560 Retaining ring 270609 Pump shaft 277397 Retaining ring 270608 Retaining ring 272561 Crank eccentric 270666...
- Page 24 ® SKF and Lincoln are registered trademarks of the SKF Group © SKF Group 2023 The contents of this publication are the copyright of the publisher and may not be reproduced (even extracts) unless prior written permission is granted Every care has been taken to ensure the accuracy...
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