TM 5-3895-383-24
9.
Release the parking brake.
10.
Move the propel control lever forward. Position the
propel control lever halfway between NEUTRAL and
FULL SPEED. Record the reading of the pressure
gauges that are connected to pressure test ports (3) and
(5).
11.
Move the propel control lever in the reverse direction.
Position the propel control lever halfway between
NEUTRAL and FULL SPEED. Record the reading of
the pressure gauges that are connected to pressure test
ports (1) and (2).
Table 10
Test Pressures For Pump Synchronization
Speed and Direction
Low
High
Axle
Pump
Drum
Pump
Fwd
Rev
Fwd
Rev
(3)
-
1000
(1)
1100
(1)
-
(1)
900
(1)
1050
(1)
(4)
-
(1)
850
(1)
1000
-
(2)
(1)
1000
(1)
1100
(1) Charge Pressure
NOTE:
The values that are shown above are for example
only The actual pressures will vary, depending on
the type of soil and the looseness of the soil.
NOTE:
The pressures for the drum propel and the axle
propel pump should match within 1380 kPa (200
psi). If the values do not match, the following
adjustments may be made.
Illustration 67
Propel Pumps
(6) External linkage rod.
12.
Remove
linkage
(6)
between
the
two
manual
displacement control levers. Both pump levers are
spring centered to the neutral position. Adjust the
length of the rod in order to allow the rod to drop onto
the manual displacement control levers.
Illustration 68
Axle Motor
(7) Minimum displacement adjustment screw. (8) Maximum
displacement adjustment screw.
Illustration 69
Drum Drive Motor
(9) Minimum displacement adjustment screw. (10) Maximum
displacement adjustment screw.
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