Figure 2-12. Transmission Test Setup.

TM 10-3930-632-34

(b) Run the engine at 2000 RPM with the

(d) Remove gage from the converter housing

transmission in neutral. The pressure gage should

outlet and replace the plug.

indicate between 110 and 125 PSI. If the pressure is

(11) Check the transmission control valve and

low, loosen the control valve mounting screws and place

transmission directional assemblies as follows:

shim stock (0.001 inch to 0.002 inch thick by 11/s inches

(a) Securely block the fork lift truck so that it

wide) between the inlet pressure hole of the control valve

cannot move.

cover and the transmission case (fig. 2-12). Tighten the

(b) Install a pressure gage that indicates between

mounting screws.

0 and 200 PSI at either the forward or reverse outlet plug

(c)

Recheck the pressure as described in (a) and

(b) above. If the pressure is still low, overhaul the control

(c)

Run the engine at 2000 RPM and place the

valve pressure regulating valve or replace the

transmission control lever in the position that

transmission oil pump. Determine which is defective as

corresponds to the outlet at which the pressure gage has

described in (11) below.

been placed (forward or reverse). The

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