SkyTrak 6036 Service Manual - Manual (Page 167)

Model 6036 S/N 9B0499 and Before 9-54
Section 9. Hydraulic System
9.3.3 Park Lock Release Valve
a. Removal
1. Engage the park lock, place the travel selector
lever in neutral, and stop the engine.
2. Depress the brake pedal to relieve any
trapped pressure.
3. Remove the electrical connector from solenoid
on the park lock release valve (2, Fig. 9.33).
4. Remove the solenoid, Fig. 9.32. To check the
solenoid, apply 12 Vdc momentarily to the
solenoid leads and check for spool movement.
If solenoid does not actuate, it is defective.
Refer to Section 10 for additional electrical test
information.
5. Tag and disconnect the hydraulic hoses at
connector (8, Fig. 9.33) and run tee (9) and
tube assembly (16) from connector (7) on the
park lock release valve.
6. Remove two hex nuts (27), lock washers (25),
flat washers (26) and capscrews (24).
Warning !
3. While holding the tubing firmly on the bleeder,
open the bleeder with a suitable small wrench.
Have an assistant depress the brake pedal.
Close the bleeder when air bubbles no longer
appear in the oil. Release the brake pedal
and remove the tubing from the bleeder.
4. Repeat steps 2 and 3 for the brakes on the
other wheels.
5. Discard the oil which was collected in the
container.
6. Check level in reservoir and fill as described in
the Owners/Operators Manual.
Fig. 9.32 Park Lock Release Valve
7. Lower park lock release valve (2) from valve
mounting plate (30).
8. Remove hydraulic fittings from valve as
required.
b. Disassembly
NOTE: There are no serviceable parts in the park
lock release valve.
Replace solenoid (Fig. 9.32) if faulty.
c. Cleaning and Drying
Without submerging the electrical portion of the
park lock release valve (2, Fig. 9.33), clean valve
in an approved cleaning solvent and blow dry.
d. Inspection and Replacement
1. Inspect and replace solenoid, electrical
connector and/or wiring if damaged. Use new
seals on solenoid.
2. Discard entire park lock release valve if
damaged.
e. Installation
1. Install connectors (7 and 8, Fig. 9.33) and run
tee (9) in park lock release valve (2).
2. Position the assembled park lock release
valve on valve mounting plate (30).
3. Secure valve to plate using two capscrews
(24), flat washers (26), lock washers (25), and
hex nuts (27).
4. Install tube assembly (16).
5. Connect hydraulic hoses to connector (8) and
run tee (9).
6. Attach electrical connector to solenoid on
valve (2).
7. Bleed brake circuit as described in paragraph
9.3.2.g.
Relieve hydraulic pressure before servicing any
hydraulic component. Escaping hydraulic fluid
under pressure can penetrate the skin causing
serious injury.
Wait for the hydraulic fluid to cool before servic-
ing any hydraulic component. Hot hydraulic fluid
can cause severe burns.
Warning !
BODY
SOLENOID WITH SEALS
MA0731