587R Pipelayer Power Train Caterpillar

Systems Operation

Note: Refer to the Systems Operation in this manual for a description of the systems operation for the 587R Pipelayer Power Train.

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Personal injury or death can result from machine movement. When tests and adjustments are made to the transmission or the torque converter, the parking brake must be disengaged. To prevent movement of the machine and personal injury perform the procedure that follows.

1. Retract the counterweight and lower the boom to the ground.

2. Put blocks in front of the tracks and behind the tracks.

3. Allow only approved personnel on the machine. Keep all other personnel off the machine and in clear view of the operator.

4. When testing must be done in a closed area, activate the service brakes when the parking brake cannot be used. When possible, activate the service brakes while performing tests.

Note: All tests and adjustments must be made with the power train system oil at normal operating temperature.

Power Train Hydraulic System (Schematic)

Illustration 1	g01256832
Power Train Oil System (1) Priority valve (2) Speed selector spool (3) Ratio valve for torque converter (4) Modulation relief valve (5) Load piston (6) Pressure differential valve (7) Breather (8) Sump in torque converter housing (9) Torque converter (10) Pump drive (11) Torque converter outlet relief valve (12) Oil cooler (13) Orifice plate (14) Power train oil pump (15) Power train oil tank (case) (16) Sump in transmission case (17) Steering and brake control valve (18) Transmission oil filter (19) Body of selector and pressure control valve (20) Direction selection spool (A ) Torque converter inlet pressure tap (B) Speed clutch (C) Direction clutch pressure tap (D) Transmission lubrication pressure tap (E) Torque converter outlet pressure tap (L) Pump Pressure (M) The pump drive's lubrication pressure tap (N) Steering clutch and brake (AA) Transmission lubrication (BB) Flow to gear case sump (CC) Steering clutch and brake lubrication

Location of the Pressure Taps

The locations of the pressure taps for the testing of the power train hydraulic system are shown in the following illustrations. Do not connect the couplings or disconnect the couplings when there is pressure in the system. This precaution will prevent damage to the seal that is in the coupling.

Illustration 2	g01241139
(A) Torque converter inlet (B) Speed clutch (C) Direction clutch (D) Transmission clutch

Illustration 3	g00310160
(E) Torque converter outlet

Illustration 4	g00310283
(G) Left steering clutch (H) Left brake (J) Right steering clutch (K) Right brake

Illustration 5	g00310161
(L) Pump pressure

Illustration 6	g00310162
(M) Pump drive lubrication

Illustration 7	g00310284
(N) Steering clutch and brake lubrication

Illustration 8	g00310285
(LP) Load piston plug

Illustration 9	g00310303
(LP) Load piston plug

Transmission Oil Pump (Bench Test Specifications)

Type ... Gear

Number of sections ... Three

Rotation at the pump drive end ... Counterclockwise

Output of the torque converter scavenge section of the pump

Use SAE 10W oil at 49°C (120°F). Check the output at the following pump speed and pressure:

Minimum output ... 98 L/min (26 US gpm)

Pump speed ... 900 RPM

Pressure ... 70 kPa (10 psi)

Output of the controls' section of the pump

Use SAE 10W oil at 49°C (120°F). Check the output at the following pump speed and pressure:

Minimum output ... 136 L/min (35.5 US gpm)

Pump speed ... 1800 RPM

Pressure ... 138 kPa (20 psi)

Output of the torque converter and lubrication section of the pump

Use SAE 10W oil at 49°C (120°F). Check the output at the following pump speed and pressure:

Minimum output ... 121 L/min (32 US gpm)

Pump speed ... 1800 RPM

Pressure ... 3100 kPa (450 psi)

Table 1

Spacer Chart Pressure Change To The Valves By Removal Or Addition Of One Spacer
Part Number	Thickness	Change In Pressure	Location
(22) 5M-9622 Spacer	1.60 mm (.063 inch)	98 kPa (14.2 psi)	Load Piston (5)
(22) 5M-9623 Spacer	0.90 mm (.035 inch)	57 kPa (8.3 psi)
(22) 5M-9624 Spacer	0.25 mm (.010 inch)	16 kPa (2.3 psi)
(23) 5M-9623 Spacer	0.90 mm (.035 inch)	16.5 kPa (2.40 psi)	Torque Converter Outlet Relief Valve (13)

Table 2

Position of The Transmission Control Lever	Clutch Engagement In The Transmission
Neutral	3
First Speed Forward	2 and 5
Second Speed Forward	2 and 4
Third Speed Forward	2 and 3
First Speed Reverse	1 and 5
Second Speed Reverse	1 and 4
Third Speed Reverse	1 and 3

Illustration 10	g01257043
Transmission Hydraulic Control Valve (5) Load piston (19) Body of the selector and pressure control valve (21) Spacers

Illustration 11	g01257042
Torque Converter Outlet Relief Valve (11) Torque converter outlet relief valve (22) Spacers

Steering and Brakes

Illustration 12	g01257065
Steering and Brake Pressure Taps (23) Adjustment screws for the clutch pressure (24) Adjustment screws for the brake pressure (G) Left steering clutch (H) Left brake (J) Right steering clutch (K) Right brake

Transmission Control Linkage

Illustration 13	g00312215

Torque for all 5/8 inch jam nuts ... 38 ± 2 N·m (28 ± 1 lb ft)

(2) Torque for nut ... 18 ± 3 N·m (13 ± 2 lb ft)

(3) Rod assembly

Length of rod assembly ... 202.0 ± 1.5 mm (7.95 ± 0.06 inch)

Torque for 3/8 inch locknuts on rod assembly ... 12 ± 4 N·m (9 ± 3 lb ft)

(8,9) Torque for 1/4 inch locknuts on cable assemblies which hold the rod ends in place ... 8 ± 5 N·m (6 ± 4 lb ft)

Procedure to Adjust the Transmission Control Linkage

The transmission control linkage must be adjusted if transmission control lever (4) comes in contact with guide (5) in any position. Adjust direction control cable (9) in order to move transmission control lever (4) to either side. Adjust speed cable (8) in order to move transmission control lever (4) to the front or to the rear.

1. Remove bolts (11) that hold cover (10) in order to adjust either cable.

2. Loosen the locknut of the cable that needs to be adjusted. Turn cover (10) in order to adjust control lever (4). Turn cover (10) so that control lever (4) does not contact the guide in any position.

Procedure to Adjust the Neutral Start Switch

1. Engage parking brake lever (7). The position is shown.

2. Adjust switch (6) until the roller is touching plate (1) .

3. Rotate switch (6) by another 3/4 of a turn. Then rotate the switch until the roller is aligned with plate (1) .

Linkage for the Steering Clutch and Brake Controls

Illustration 14	g01239076

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Steering clutch and brake control linkage adjustments should be made only with the engine OFF. Accidental disengagement of the parking brake while the engine is running could cause sudden machine movement and personal injury.

Torque for all 3/8 inch locknuts that hold the rod ends in place on the rod ... 14 ± 4 N·m (10 ± 3 lb ft)

Torque for all 1/2 inch locknuts that hold the rod ends in place on the rod ... 45 ± 7 N·m (33 ± 5 lb ft)

Note: All rod assembly measurements must be made in a straight line between the centerlines of the rod end mounting holes.

Note: All of the 3/8 inch rods must engage the rod ends at a minimum depth of 14 mm (0.55 inch). All of the 1/2 inch rods must engage the rod ends at a minimum depth of 19 mm (0.75 inch).

(1) Dimension ... 64 mm (2.52 inch)

(4) Assembled length of rod assembly ... 120.6 ± 1 mm (4.7480 ± 0.04 inch)

(8) Dimension ... 190 mm (7.48 inch)

(A) Assembled length of rod assembly ... 815.0 ± 1.5 mm (32.09 ± 0.06 inch)

(B) Assembled length of rod assembly ... 452.0 ± 1.5 mm (17.79 ± 0.06 inch)

(C) Assembled length of rod assembly ... 432.0 ± 1.5 mm (17.01 ± 0.06 inch)

(D) Assembled length of rod assembly ... 796.0 ± 1.5 mm (31.34 ± 0.06 inch)

(E) Assembled length of rod assembly ... 180.0 ± 1.5 mm (7.09 ± 0.06 inch)

(F) Assembled length of rod assembly ... 471.0 ± 1.5 mm (18.54 ± 0.06 inch)

(G) Assembled length of rod assembly ... 228.0 ± 1.5 mm (8.98 ± 0.06 inch)

(H) Assembled length of rod assembly ... 576.5 ± 1.5 mm (22.69 ± 0.06 inch)

Illustration 15	g01239099

Procedure for the Adjustment of the Steering Levers and Linkages

1. Disconnect rod assembly from lever (6) at the steering control valve.

   Note: The rod assemblies that may need to be adjusted are for the left and right steering clutch .

2. Adjust bumper (5) so that the centerline of steering clutch lever (2) is the length of dimension (1) away from the front of the operator console.

3. Pull lever (6) toward the front of the vehicle until the free movement stops and resistance is felt. Hold lever (6) in this position.

4. Make an adjustment to the rod assembly in order to obtain a free fit of the pin in lever (6) .

5. Perform the first four steps for the other side.

Procedure for the Adjustment of the Brake Pedal Linkage

1. Disconnect rod assembly from lever (7) at the steering control valve.

2. Adjust the brake pedal to dimension (8) while the brake pedal is fully depressed. First, remove the brake pedal from the splined shaft. Then, move the brake pedal for the number of splines that are necessary in order to obtain dimension (8) .

3. Adjust the spring to assembled length (4) .

4. Pull lever (7) toward the front of the vehicle until resistance is felt. Hold lever (7) in this position.

5. Make an adjustment to rod assembly in order to obtain a free fit of the pin in lever (7) .

6. Perform the first three steps for the other side.

Procedure to Adjust the Parking Brake Linkage

1. Move parking brake lever (3) to the ON position.

2. Install a pressure gauge with a 4000 kPa (600 psi) capacity on either brake pressure tap.

3. Start the engine and run the engine at high idle.

4. The pressure gauge must read a maximum of 70 kPa (10 psi). If the pressure is more than 70 kPa (10 psi), increase the length of rod assembly (A) and check the pressure again.

5. Move parking brake lever (3) to the OFF position. The pressure gauge must register 2310 ± 35 kPa (335 ± 5 psi). If the pressure reading is low, decrease the length of rod assembly (A) and check the pressure again.

6. Stop the engine and remove the test equipment.