SUB-SECTION 5E
SUB-SECTION 5E
3. Position the new motor on the mounting plate, making
HOSE REEL (36Z691)
sure the reel shaft drive pin engages the motor shaft. When
the new motor is properly positioned, install screws (3) and
GENERAL
washers (4).
The hose reel is mounted on the revolving frame and pro-
vides an extendable hydraulic connection between the re-
4. Pretension the how reel by turning the reel clockwise, as
volving frame and the telescoping sections of the boom. In
viewed from the how side, three turns. Cast off one wrap of
other words, the hose reel pays out hose when the boom is
hose from the real, without removing any pretension, and
extended and takes up hose when the boom is retracted.
attach the hoses to the upper telescope cylinder.
The hose reel consists basically of three parts; a spring
motor, a swivel, and a reel. Oil from the control valve is fed
MOTOR SPRING REPLACEMENT. To replace the spring
to the swivel which maintains a flow path to the hoses
in the spring motor, proceed as follows:
regardless of the position of the hose reel. The spring motor
maintains the hoses at a predetermined tension so that the
1. Remove four screws (3, Figure 5E-1) and washers (4).
hoses will retract when the boom is retracted, while still
Pull motor'(l) away from mounting plate (2) until the reel
allowing enough freedom for the hoses to extend when the
shaft drive pin is disengaged from the motor shaft.
boom is extended.
2. Place the motor on end, back plate (1, Figure 5E-2)
REPAIR
down. Remove six tie bolts (2) and nuts (3). Lift off front
cover (4) and outside motor band (5).
GENERAL. Repair of the hose reel should be limited lo the
replacement of the spring motor, springs in the motor,
3. Pull driveshaft (6), with fixed hubs (7), up and out,
swivel seals, and hoses, or the complete unit. The procedure
while holding the center of exposed spring (8) in position.
for replacing each of these items is described below:
Do nor allow the center of the spring to be pulled out.
4. Springs (8) and cup assemblies (9 and 10) may now be
removed and separated as required.
Before attempting any repairs on the hose reel, re-
5. Install a new spring in cup assemblies (9 or 10). Position
move all hydraulic pressure by operating the tele-
the spring in the cup assembly so that-the hook on the
scope lever(s) with the engine stopped, and relieve
outer edge of the spring engages the hook on the inner
spring motor tension by disconnecting the hoses and
surface of the cup assembly.
unwinding the spring motor. Be sure to prevent the
hose reel from turning while the hoses are being dis-
connected.
6. lnstall cup assembly (9), with spring (8) installed, on
drive ring (11). Be sure the square cutout in cup assembly
SPRING MOTOR REPLACEMENT. To replace the spring
(9) engages the fine on drive ring (11).
motor, proceed as follows (see Figure 5E-1):
7. Install cup assembly (10) on assembly (9).
1. Remove four screws (3) and washers (4).
8. Install driveshaft (6), with fixed hubs (7), down through
2. Full motor (1) away from mounting plate (2) until the
the center of the springs. Be sure thee hook on the fixed hub
reel shaft drive pin is disengaged from the motor shaft.
engages the hook on the spring.
5E-1
