CB-534 PROPULSION SYSTEM Caterpillar

Rotation is counterclockwise when seen from drive end.

(1) Type of pump ... Piston

Displacement ... 40 cm³/rev (2.44 in³/rev)

For bench test, use Service Classification ISO 3448 type VG 46 hydraulic oil. The oil must be certified to have anti-rust, very high viscosity index and anti-oxidation additive properties for heavy duty use.

Test At Full Speed

Output ... 129.5 ± 3.0 liter/min(34.19 ± 79 U.S. gpm)

At a pressure of ... 690 kPa (100 psi)

With pump at ... 3235 rpm

With engine at ... 2200 rpm

Output ... 128.5 ± 3.0 liter/min(33.92 ± .79 U.S. gpm)

At a pressure of ... 6900 kPa (1000 psi)

With pump at ... 3235 rpm

With engine at ... 2200 rpm

Test At Half Speed

Output ... 64.7 ± 1.5 liter/min(17.08 ± .40 U.S. gpm)

At a pressure of ... 690 kPa (100 psi)

With pump at ... 1617 rpm

With engine at ... 1100 rpm

Output ... 64.0 ± 1.5 liter/min(16.90 ± .40 U.S. gpm)

At a pressure of ... 6900 kPa (1000 psi)

With pump at ... 1617 rpm

With engine at ... 1100 rpm

(2) Torque for screws ... 180 N·m (135 lb ft)

(3) Torque for screws ... 60 N·m (44 lb ft)

(4) Torque for plug ... 60 N·m (44 lb ft)

Propulsion Pump Cross Section

(5) Torque for screws ... 3 N·m (27 lb in)

(6) Torque for screws ... 20 N·m (15 lb ft)

(7) Shims used with cup washer set:

a. Outside diameter ... 42.67 to 42.70 mm (1.680 to 1.681 in)

Inside diameter ... 37.90 ± 0.15 mm (1.492 ± .006 in)

Thickness ... 0.60 mm (.024 in)

b. Outside diameter ... 42.67 to 42.70 mm (1.680 to 1.681 in)

Inside diameter ... 37.90 ± 0.15 mm(1.492 ± .006 in)

Thickness ... 0.80 mm (.031 in)

c. Outside diameter ... 42.67 to 42.70 mm (1.680 to 1.681 in)

Inside diameter ... 37.90 ± 0.15 mm (1.492 ± .006 in)

Thickness ... 1.00 mm (.039 in)

d. Outside diameter ... 42.67 to 42.70 mm (1.680 to 1.681 in)

Inside diameter ... 37.90 ± 0.15 mm (1.492 ± .006 in)

Thickness ... 1.20 mm (.047 in)

The quantity of shims used along with the cup washer assembly will depend on barrel assembly preload. Correct preload is obtained when a play of 2.02 to 2.36 mm (.080 to .093 in) is found between the head and main pump case.

(8) Shims used for bearing preload:

a. Outside diameter ... 44.97 to 45.0 mm (1.770 to 1.772 in)

Inside diameter ... 35.70 ± 0.15 mm (1.406 ± .006 in)

Thickness ... 0.10 mm (.004 in)

b. Outside diameter ... 44.97 to 45.0 mm (1.770 to 1.772 in)

Inside diameter ... 35.70 ± 0.15 mm (1.406 ± .006 in)

Thickness ... 0.30 mm (.012 in)

c. Outside diameter ... 61.97 to 62.00 mm (2.440 to 2.441 in)

Inside diameter ... 50.70 ± 0.15 mm (1.996 ± .006 in)

Thickness ... 0.10 mm (.004 in)

d. Outside diameter ... 61.97 to 62.00 mm (2.440 to 2.441 in)

Inside diameter ... 50.70 ± 0.15 mm (1.996 ± .006 in)

Thickness ... 0.30 mm (.012 in)

Maximum shaft end play of 0.30 mm (.012 in) controls the number of shims used along with the bearing assembly.

(9) Torque for screws ... 120 N·m (90 lb ft)

(10) Cup washer set:

Quantity used ... 4

Outside diameter ... 42.6 mm (1.677 in)

Inside diameter ... 32.5 mm (1.280 in)

Free length after test (of one cup washer) ... 1.75 mm (.068 in)

Length under test force (of four cup washers) ... 4.64 mm (.183 in)

Test force ... 923 ± 36 N (208 ± 8 lb)

(11) Torque for plug ... 60 N·m (44 lb ft)

(12) Torque for nuts ... 50 N·m (37 lb ft)

Hydraulic Regulator
Part Of 813991 Pump Assembly

(13) Torque for plugs ... 20 N·m (15 lb ft)

(14) Torque for screw ... 10 N·m (90 lb in)

(15) Springs (outer):

Length under test force ... 33.01 mm (1.300 in)

Test force ... 751 ± 20 N (169 ± 5 lb)

Free length after test ... 54.14 mm (2.131 in)

Outside diameter ... 40.5 mm (1.59 in)

(16) Springs (inner):

Length under test force ... 26.11 mm (1.028 in)

Test force ... 270 ± 13 N (61 ± 3 lb)

Free length after test ... 54.39 mm (2.141 in)

Outside diameter ... 24.4 mm (.961 in)

(17) Torque for nut ... 60 N·m (44 lb ft)

Boost Pump
813965

Rotation is counterclockwise when seen from drive end.

Type of pump: Gear

Displacement ... 8.4 cm³/rev (.51 in³/rev)

For bench test, use Service Classification ISO 3448 type VG 46 hydraulic oil. The oil must be certified to have anti-rust, very high viscosity index and anti-oxidation additive properties for heavy duty use.

Test At Full Speed

Output ... 21.74 liter/min (5.7 U.S. gpm)

At a pressure of ... 3500 kPa (510 psi)

With pump at ... 3235 rpm

With engine at ... 2200 rpm

Test At Half Speed

Output ... 10.87 liter/min (2.9 U.S. gpm)

At a pressure of ... 3500 kPa (510 psi)

With pump at ... 1617 rpm

With engine at ... 1100 rpm

Propulsion System Control Valves

(18) Torque for plug ... 60 N·m (44 lb ft)

(19) Torque for main relief valves ... 80 N·m (60 lb ft)

(20) Pressure setting for main relief valves ... 42 000 kPa (7000 psi)

(21) Torque for plugs ... 35 N·m (26 lb ft)

(22) Pressure setting for booster pump relief valve ... 2500 kPa (365 psi)

(23) Torque for booster pump relief valve ... 50 N·m (37 lb ft)

Main Relief Valve
813326

(24) Torque for nut ... 10 N·m (90 lb in)

(25) Torque for spring housing ... 70 N·m (50 lb ft)

(26) Spring for dump valve section:

Length under test force ... 18.0 mm (.71 in)

Test force ... 358 ± 9 N (81 ± 2 lb)

Free length after test ... 23.0 mm (.91 in)

Outside diameter ... 11.25 mm (.443 in)

(27) Spring:

Length under test force ... 13.5 mm (.53 in)

Test force ... 30 ± 2 N (7 ± .5 lb)

Free length after test ... 22.0 mm (.87 in)

Outside diameter ... 7.6 mm (.30 in)

Boost Pump Relief Valve
813299

(28) Torque for nut ... 10 N·m (90 lb in)

(29) Torque for spring housing ... 70 N·m (50 lb ft)

(30) Spring:

Length under test force ... 9.8 mm (.39 in)

Test force ... 263 ± 20 N (59 ± 4.5 lb)

Free length after test ... 13.8 mm (.54 in)

Outside diameter ... 12.1 mm (.48 in)