Manual De Bomba De Pistones
Enviado por • 13 de Octubre de 2014 • 1.179 Palabras (5 Páginas) • 367 Visitas
Disambly and Assembly
D11T Track-Type Tractor Machine Systems
Media Number -RENR8178-03 Publication Date -01/06/2011 Date Updated -24/06/2011
i02787906
Piston Pump (Fan Drive) (Fixed Displacement, Rear) - Disassemble
SMCS - 1387-015
Disassembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 1P-1858 Retaining Ring Pliers 1
B 1P-0510 Driver Gp 1
Start By:
A. Remove the fan drive pump. Refer to Disassembly and Assembly, "Piston Pump (Fan Drive) (Fixed Displacement, Rear) - Remove".
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Illustration 1 g00539197
1. Remove bolts (1) and compensator valve (3) from head (2) .
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Illustration 2 g00539259
Personal injury can result from being struck by parts propelled by a released spring force.
Make sure to wear all necessary protective equipment.
Follow the recommended procedure and use all recommended tooling to release the spring force.
2. Remove cap nut (13), seal (4), adjustment nut (14), seal (5), and adjustment screw (6) .
3. Remove plug (7), O-ring seal (8), seat (9), spring (10), and retainer (11) .
4. Remove valve stem (12) .
5. Remove cap nut (17), seal (15), adjustment nut (18), seal (16), and adjustment screw (19) .
6. Remove plug (20), O-ring seal (21), seat (22), spring (23), spring (24), and retainer (25) .
7. Remove valve stem (26) .
8. Remove orifice valve (32) and seal (33) .
9. Remove O-ring seals (31) .
10. Remove the plug and seal (30) .
11. Remove setscrew (27) .
12. Remove plug (28) and seal (29) .
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Illustration 3 g00539261
Personal injury can result from being struck by parts propelled by a released spring force.
Make sure to wear all necessary protective equipment.
Follow the recommended procedure and use all recommended tooling to release the spring force.
13. Slowly remove bolts (34) and head (2) from housing (35) .
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Illustration 4 g00539262
14. Remove plunger (36) and O-ring seals (37) from pump head (2) .
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Illustration 5 g01067014
15. Remove guide (38), cylinder (40), and bearing cup (39) from pump head (2) .
16. Remove plugs (41) from the underside of pump head .
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Illustration 6 g00539266
17. Remove spring (42), plunger (43), piston assembly (44), and O-ring seal (45) .
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Illustration 7 g01067219
18. Remove bearing cone (45A) .
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Illustration 8 g00539271
19. Remove spacer (46) and rotating group (47) .
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Illustration 9 g00539273
20. Remove plate (48) and pistons (49) from barrel (50) .
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Illustration 10 g00539274
21. Remove pistons (49) from plate (48) .
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Illustration 11 g00539298
22. Remove bearing (51) from barrel (50) .
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Illustration 12 g00539303
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Illustration 13 g00539304
Personal injury can result from being struck by parts propelled by a released spring force.
Make sure to wear all necessary protective equipment.
Follow the recommended procedure and use all recommended tooling to release the spring force.
23. Use a suitable press and Tooling (B) to compress spring (53) .
24. Use Tooling (A) to remove retaining ring (52) from barrel (50) .
25. Carefully remove spring (53), plate (54), and pins (55) from barrel (50) .
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Illustration 14 g00539306
26. Remove swashplate assembly (56) from the pump housing (35) .
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Illustration 15 g00539309
27. Remove stop assemblies (57) from swashplate assembly (56) .
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Illustration 16 g00539310
28. Remove shaft assembly (58) from pump housing (35) .
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Illustration 17 g00539312
29. Remove bearing cone (59) from shaft (58) .
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Illustration 18 g00539314
30. Remove swashplate bearings (60) from pump housing (35) .
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Illustration 19 g00539315
31. Remove bearing cup (61) from pump housing (35) .
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Illustration 20 g00539316
32. Use Tooling (A) to remove retaining rings (62) .
33. Use Tooling (B) to remove lip seal (63) .
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Copyright 1993 - 2014 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Test on the Bench
If the test bench can be run at 6900 kPa (1000 psi) and at full pump rpm, determine the percent of flow loss with the above formula.
If the test bench can not be run at 6900 kPa (1000 psi) or at full pump rpm, run the pump shaft at 1000 rpm. Measure the pump flow at 690 kPa (100 psi) and at 6900 kPa (1000 psi). Use these values in the top portion of the following formula. For the bottom part of the formula, run the pump shaft at 2000 rpm. Measure the pump flow at 690 kPa (100 psi).
Table 5
Pump flow at
690 kPa (100 psi)
− Pump flow at
6900 kPa (1000 psi) × 100 = Percent of flow loss
Pump flow at
690 kPa (100 psi) and at 2000 rpm
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Specifications
D11T Track-Type Tractor Hydraulic System
Media Number -RENR8229-08 Publication Date -01/09/2013 Date Updated -24/09/2013
i01850818
Fan Drive Pump
SMCS - 1387; 5070
Part Number - 204-2576
S/N - -
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Illustration 1 g00344578
Cover end
Rotation is counterclockwise when you look from the drive end.
This is a fixed displacement piston pump.
Use SAE 10W oil at 65 deg c (149 deg f) in order to test the pump.
Pump
Output ... 48 L/MIN (12.5 US gpm)
Pressure ... 6900 kPa (1000 psi)
Speed ... 2200 rpm
(1) Torque for four bolts ... 100 ± 20 N•m (75 ± 15 lb ft)
(2) Torque for plug ... 105 ± 10 N•m (77 ± 7 lb ft)
(3) Torque for two plugs ... 45 ± 5 N•m (33 ± 3.5 lb ft)
(4) 138-4696 Spring
(5) 128-7073 Spring
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Illustration 2 g00344904
Drive end
Rotation is counterclockwise when you look from the drive end.
This is a variable piston pump.
Use SAE 10W oil at 65 deg c (149 deg f).
Pump
Output ... 156 L/MIN (41 US gpm)
Pressure ... 6900 kPa (1000 psi)
Speed ... 2200 rpm
(6) Torque for four bolts ... 165 ± 30 N•m (120 ± 20 lb ft)
(7) Torque for plug ... 105 ± 10 N•m (77 ± 7 lb ft)
(8) Torque for two plugs ... 45 ± 5 N•m (33 ± 3.5 lb ft)
(9) 6E-6176 Spring
(10) 6E-4009 Spring
Shaft Bearing Preload Adjustment
1. Perform this procedure when you install a new swashplate or bearings.
2. Assemble the pump swashplate, the shaft, the bearing and the shim.
3. Install the cover and tighten four head bolts.27 ± 3 N•m (20 ± 2 lb ft)
4. The clearance must be 0.0 to 0.05 mm (0.0 to .002 inch).
5. If necessary, change the shim in order to achieve the proper initial clearance. Reassemble the head bolts and torque the head bolts. 165 ± 30 N•m (120 ± 20 lb ft)
Compensator Valve
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Illustration 3 g00345512
(1) 6E-3274 Spring
Length under test force ... 14.4 mm (.57 inch)
Test force ... 81.7 ± 14.5 N (18.4 ± 3.3 lb)
Free length after test ... 15.9 mm (.63 inch)
Outside diameter ... 7.7 mm (.30 inch)
(2) 6E-3275 Spring
Length under test force ... 15.1 mm (.59 inch)
Test force ... 40.2 ± 2.8 N (9.0 ± .6 lb)
Free length after test ... 20.5 mm (.81 inch)
Outside diameter ... 10.7 mm (.42 inch)
(3) 6E-3276 Spring
Length under test force ... 32.6 mm (1.28 inch)
Test force ... 462 ± 71 N (104 ± 16 lb)
Free length after test ... 35.6 mm (1.40 inch)
Outside diameter ... 19.2 mm (.76 inch)
...