SkyTrak 6036 Service Manual - Manual (Page 237)

Section 9 Hydraulic System
Model 6036/6036T S/N 9B0500 thru 14833 9-87
9.6.4 Valve Plate Assembly
The secondary control valve (25), brake manifold
valve assembly (3), steer select valve, and priority
valve are mounted on the valve plate located
under the cab (Fig. 52 and 53).
Machines without transmission de-clutch installed
(S/N 9B0500 thru OE1179) are shown in Figure
52.
Machines with transmission de-clutch installed
(S/N OE1180 and After) are shown in Figure 53.
9.6.5 Brake Manifold Valve Assembly
(Without Trans. De-clutch, S/N
9B0500 thru OE1179)
The park lock release solenoid valve, pressure
reducing valve, and sequence valve are installed
in the brake manifold valve block.
a. Removal
1. Engage the park lock, place the travel selector
lever in neutral, and stop the engine.
6. Remove two nuts (35) and capscrews (2) and
remove assembled brake manifold valve (3)
from valve plate (9).
7. Remove connectors (1 and 5) elbows (4) tee
(8) and reducer (7) from the brake manifold
valve (Fig. 9.52).
b. Disassembly
1. Remove check valve, park lock release
solenoid valve, pressure reducing valve and
sequence valve from brake manifold valve.
NOTE: There are no serviceable parts in the
brake manifold valve block other than the remov-
able valves shown (Fig. 9.54); do not disas-
semble.
c. Cleaning
Without submerging the electrical portion of the
brake manifold valve block, clean manifold valve
block and the other valves removed in an ap-
proved cleaning solvent and blow dry.
d. Inspection and Replacement
1. Inspect solenoid, electrical connectors and
wiring and replace if damaged.
2. Inspect the seals on the check valve, park lock
release solenoid valve, pressure reducing
valve, and sequence valve. Refer to the parts
manual for the correct seal kits for each valve
and replace seals if damaged.
Fig. 9.54 Brake Manifold Valve Assembly
(Without Trans. De-clutch, S/N 9B0500 thru OE1179)
2. Remove the electrical connector from the
solenoid (Fig. 9.54) on brake manifold valve.
3. Slowly loosen fittings at brake manifold valve
as required (3, Fig. 9.52) to relieve any
trapped pressure.
4. To check a solenoid, apply 12 Vdc momentar-
ily to the solenoid leads and listen for an
audible click that indicates spool movement. If
there is no sound, the solenoid is probably
defective. Refer to Section 10 for additional
electrical test of the steer select valve.
6. Tag and disconnect hydraulic hoses from
connectors (1 and 5, Fig. 9.52), elbows (4)
and tee (8) on brake manifold valve (3). Cap
or plug the hoses.
Warning
Wait for the hydraulic fluid to cool before servic-
ing any hydraulic component. Hot hydraulic fluid
can cause severe burns.
Relieve hydraulic pressure before servicing any
hydraulic component. Escaping hydraulic fluid
under pressure can penetrate the skin causing
serious injury.
Warning
%5
Y
&9
'6
69
&< 3
7
35
PARK LOCK
RELEASE
SOLENOID
VALVE
SOLENOID ELECTRICAL
CONNECTIONS
SEQUENCE
VALVE
PRESSURE
REDUCING
VALVE
BRAKE MANIFOLD
VALVE BLOCK
CHECK
VALVE
MA5040