SkyTrak 6036 Service Manual - Manual (Page 238)

Section 9 Hydraulic System
9-88 Model 6036/6036T S/N 9B0500 thru 14833
e. Installation
1. Lubricate with hydraulic oil and install the
check valve, park lock release solenoid valve,
pressure reducing valve, and the sequence
valve into the brake manifold valve (Fig. 9.54).
2. Install connectors (1 and 5), elbows (4),
reducer (7), and tee (8) into the brake manifold
valve.
3. Install the assembled brake manifold on the
valve plate (9) using two capscrews (2) and
nuts (35).
4. Connect the hoses to connectors (1 and 5),
elbows (4), and tee (8).
5. Connect the electrical connector to the park
lock release solenoid valve (Fig. 9.54).
6. Start the engine and operate the brake pedal
and park lock switch several times to purge
the brake system of air.
7. Bleed the brake system as described in
paragraph 9.6.3.g if necessary.
Warning
Before starting the engine be sure all hydraulic
connections are tight and all tools are removed
from the forklift.
8. Refer to paragraph 9.4.5.b for pressure
checks and adjustments, and paragraph
9.4.5.c for testing.
9.6.6 Brake Manifold Valve Assembly
(With Trans. De-clutch, S/N OE1180
and After)
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.
Warning
Relieve hydraulic pressure before servicing any
hydraulic component. Escaping hydraulic fluid
under pressure can penetrate the skin causing
serious injury.
Warning
Wait for the hydraulic fluid to cool before servic-
ing any hydraulic component. Hot hydraulic fluid
can cause severe burns.
2. Slowly loosen fittings at brake manifold valve
as required (3, Fig. 9.53) to relieve any
trapped pressure.
3. Remove the electrical connector from the
solenoid (2, Fig. 9.55) on brake manifold
valve.
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.
5. Tag and disconnect hydraulic hoses from
connectors (1 and 5, Fig. 9.53), elbows (4)
and tee (8) on brake manifold (3). Cap or plug
the hoses.
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.
b. Disassembly
1. Remove check valve, park lock release
solenoid valve, pressure reducing valve and
sequence valve from brake manifold valve
block (Fig. 9.55).
NOTE: There are no serviceable parts in the
brake manifold valve block other than the remov-
able valves shown (Fig. 9.55); 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.