D6N Track-Type Tractor Power Train Caterpillar

Relief Valve (Torque Converter Outlet) Pressure - Test and Adjust

Usage:

D6N ALH

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Table 1
Required Tools
Part Number	Part Description	Qty
6V-7830	Tetragauge group	1

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Illustration 1	g00887536
CBF1-299 CCG1-399 ALH1-734 CBJ1-399 ALR1-634

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Illustration 2	g01167293
CBF300-UP CCG400-UP ALH735-UP CBJ400-UP ALR635-UP

Attach the gauge to pressure tap (N) .

Warm the transmission oil to operating temperature.

Run the engine at HIGH IDLE. Fully depress the brake pedal. Disengage the parking brake. Put the torque converter in a stalled condition with the transmission in third speed forward. Note the pressure on the gauge. The pressure should be 410 ± 50 kPa (60 ± 7.5 psi).
Note: This pressure pertains to a test that is done on the machine. The 410 ± 50 kPa (60 ± 7.5 psi) is not a bench test specification.

If the pressure that is observed is not 410 ± 50 kPa (60 ± 7.5 psi), perform the following steps:

Shut off the engine.

Remove the torque converter outlet relief valve. Refer to Power Train Disassembly and Assembly, "Torque Converter Outlet Relief Valve - Remove" for your machine.

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Table 2
SPACER CHART Pressure Change To The Valve By Removal Or Addition Of One Spacer
Part Numbers for Spacers (2)	Thickness	Change in Pressure	Location
4M-1751 Spacer	0.40 mm (0.016 inch)	19 kPa (2.7 psi)	Torque Converter Outlet Relief Valve (J)
5S-7001 Spacer	0.90 mm (0.035 inch)	40 kPa (6.0 psi)	Torque Converter Outlet Relief Valve (J)

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Illustration 3	g00839524
Torque converter outlet relief valve

Add spacers (1) or remove spacers (1) , as needed. Refer to Power Train Disassembly and Assembly, "Torque Converter Outlet Relief Valve - Dissassemble" for your machine. Refer to Table 3 for the specifications for the spacers.

Assemble the torque converter relief valve. Refer to Power Train Disassembly and Assembly, "Torque Converter Outlet Relief Valve - Assemble" for your machine.

Install the torque converter relief valve. Refer to Power Train Disassembly and Assembly, "Torque Converter Outlet Relief Valve - Install" for your machine.