Transmission Hydraulic System Testing and Adjustment

Figure 6-68. Junction block removal.

Transmission Hydraulic System Testing

CAUTION

All tests and adjustments must be made

a n d Adjustment

w i t h the oil in the hydraulic control

a. G e n e r a l . The hydraulic control system oil

s y s t e m a t normal operating tem-

supply (fig. 6-69 and 6-70) is common to the entire

perature. The low and high idle engine

system, Tests and adjustments can be performed

speeds for this machine are 660 rpm and

using individual pressure gages or a hydraulic test

2 2 1 0 rpm respectively. It is important

box. All pressure taps use 1/8 inch - 27 NPT plugs

that the transmission hydraulic control

except the transmission oil pump pressure tap (E,

linkage is properly adjusted before

fig. 6-69 and 6-70) on the filter (B) and the

making any tests. Refer to paragraph 6-

transmission lubricating oil pressure tap (C). Use

4 for linkage adjustments.

a d a p t e r assemblies when making connections to

these taps.