ELBOW 2944821 - Caterpillar

Machine Preparation
Move the machine to a smooth horizontal location.
Lower all of the implements.
Illustration 3 g02381638
(1) Pressure Tap CL1 ( reverse )
(2) Pressure Tap CL2 ( forward )
(3) Pressure Tap CL3 ( Third gear )
(4) Pressure Tap CL4 ( Second gear )
(5) Pressure Tap CL5 ( First gear )
Attach one set of tooling (A or B) to pressure tap (2) and one set of tooling (A or B) to pressure tap (5). Pressure tap (2) is for No. 2 Clutch (FORWARD). Pressure tap (5) is for No. 5 Clutch (FIRST SPEED).
Run the hydraulic hoses from tooling (A or B) into the cab.Test Procedure
Start the engine.
Warm the power train oil to a temperature of 84° 8°C (183° 14°F).
Operate the engine at LOW IDLE.
Engage the service brake.
Disengage the parking brake.
Place the transmission in the FIRST SPEED FORWARD position.
Check the pressure at tooling (A or B) for the No. 2 clutch. The pressure at tooling (A or B) for the No. 2 clutch should be 2585 105 kPa (375 15 psi) (main relief pressure).
Check the pressure at tooling (A or B) for the No. 5 clutch. The pressure at tooling (A or B) for the No. 5 clutch should be 2240 170 kPa (325 25 psi).
Use Table 3 in order to check all of the other combination of clutches. Copy Table 2 and record the pressure measurements in the table.Reference: See Specifications, Systems Operation/Testing and Adjusting, "Pressure Charts" in this module for additional pressure values.Worksheet
Table 2
Checklist for Transmission Clutch Pressures at Low Idle
Transmission Speed Transmission Clutch Specification Pressure Measurement Transmission Clutch Specification Pressure Measurement
FIRST SPEED FORWARD No. 2 Clutch 2585 105 kPa (375 15 psi) No. 5 Clutch 2240 170 kPa (325 25 psi)
SECOND SPEED FORWARD No. 2 Clutch 2585 105 kPa (375 15 psi) No. 4 Clutch 2585 105 kPa (375 15 psi)
THIRD SPEED FORWARD No. 2 Clutch 2585 105 kPa (375 15 psi) No. 3 Clutch 2585 105 kPa (375 15 psi)
NEUTRAL No. 3 Clutch 2585 105 kPa (375 15 psi) N/A
FIRST SPEED REVERSE No. 1 Clutch 2585 105 kPa (375 15 psi) No. 5 Clutch 2240 170 kPa (325 25 psi)
SECOND SPEED REVERSE No. 1 Clutch 2585 105 kPa (375 15 psi) No. 4 Clutch 2585 105 kPa (375 15 psi)
THIRD SPEED REVERSE No. 1 Clutch 2585 105 kPa (375 15 psi) No. 3 Clutch 2585 105 kPa (375 15 psi)
Table 3
Transmission Speed Clutches That are Engaged In The Transmission
First Speed Forward 2 and 5
Second Speed Forward 2 and 4
Third Speed Forward 2 and 3
Neutral 3
First Speed Reverse 1 and 5
Second Speed Reverse 1 and 4
Third Speed Reverse 1 and 3