PARTS KIT 5Y1933 - Caterpillar

Introduction
When testing and adjusting the transmission and power train, move the machine to an area clear of obstructions, with safe exhaust ventilation for the exhausts. Sudden movement of the machine or release of oil under pressure can cause injury to persons on or near the machine. To prevent possible injury, do the procedure that follows before testing and adjusting the transmission and power train.
Personal injury can result from spring force released when removing cap screws.Internal spring force will be released when cylinder assembly cap screws are removed causing injury.Always restrain cover as cap screws are loosened.Follow the established procedure in the Service Manual to service these parts.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the machine. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Dispose of all fluids according to local regulations and mandates.
The following test is used to test the transmission pressures.Required Tools
Table 3
Tool Item Part Number Description Qty
A A1 8T-0855 Pressure Gauge
(0 to 4,000 kPa (0 to 580 psi)) 1
A2 6V-3989 Fitting 1
A3 6V-4143 Quick Connect Coupler 2
A4 177-7860 Hose As
(3.0 m (10 ft)) 1
B 198-4240 Digital Pressure Indicator Gp
B1 198-4234 Digital Indicator 1
B2 198-4237 Pressure Sensor Gp
(0 to 3,445 kPa (0 to 500 psi)) 1
B3 198-4236 Adapter Cable As 1
D D1 326-8026 Transmission Test Cover 1 Test Preparation
Before you begin this procedure, refer to Testing and Adjusting, "Machine Preparation".
Operate the machine until the transmission oil is at operating temperature of 75 °C to 90 °C (167 °F to 194 °F).
Stop the machine on a hard level surface. Place the transmission in NEUTRAL. Turn off the engine. Place blocks in front of the wheels and place blocks behind the wheels.
Illustration 1 g01285415
(1) Test port for clutch 1 (forward high)
(2) Test port for clutch 2 (forward low)
(3) Test port for clutch 3 (reverse)
(4) Test port for clutch 4 (second speed)
(5) Test port for clutch 5 (third speed)
(6) Test port for clutch 6 (first speed)
(7) Test port for clutch 7 (low range)
(8) Test port for clutch 8 (high range)
Illustration 2 g01285414
Rear view of the transmission
(9) Cover for the transmission control valve
Remove cover (9) from the transmission.
Remove the drive shaft guard.
Remove the differential drive shaft.
Assemble Tooling (D) with the 25.4 mm (1.00 inch) bumper.
Use the bolt holes for the drive shaft guard to attach Tooling (D) to the parking brake housing.Test Procedure
Attach Tooling (A) or (B) to test ports (5) and (8). Operate the engine at high idle with the transmission in NEUTRAL. Tooling (A) or (B) should read 2480 70 kPa (360 10 psi). Record the pressure readings in Table 1. Remove Tooling (A) or (B).
Attach Tooling (A) or (B) to test port (1), (6), and (7). Operate the engine at high idle with the transmission in FIRST GEAR FORWARD. Tooling (A) or (B) should read 1925