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3. 9
TOWING
1.
When winching or towing a stuck loader from the rear,
always lower the lift arms until the attachment is
resting on the ground and then follow the shut-off
procedure (See Section 3.1-3).
2.
When winching or towing a stuck loader from the
front, lower the attachment so that the front attachment
points are accessible and have an assistant block the
attachment, then follow the shut-off procedure (See
Section 3.1-3).
3.
Attach a properly rated chain, cable or towing strap to
the towing points provided (Fig. 3.8A).
4.
Deactivate the brake system for towing. To release the
park brake, turn the release button on the brake valve
counter clockwise. Pressurize the brake release quick
coupler to 218 PSI (15 Bar). This will release the
motor brakes for towing. See maintenance section 4.7-
6 for details.
5.
Open the pump bypass valve (manually operated). To
accomplish oil bypass, turn the bypass valve nut (Fig.
3.8B) counter-clockwise two (2) revolutions. (DO
NOT open the valve past two (2) turns.) When open,
the valve connects both sides of the pump/motor
circuit and allows the motor to turn for towing short
distances at low speeds without running the engine.
The valve closing torque is 7-10 ft. lbs. (9.5-14 Nm).
* Damage to the unit may result from over-torquing
the bypass valve.
6.
The attachment point on the towing or winching
equipment should be kept as low as possible and in as
direct a line as possible with the stuck loader. A steep
tow line angle or side pull could result in upsetting the
stuck loader.
32
3. OPERATION
C3934
C3935
IMPORTANT
Bypass Valve
Never install tie down
chains across the bucket
cylinders. Damage to the
cylinders may occur.
To avoid personal injury, lower
the lift arms, shut off the
engine, raise the seat bar and
cycle the lift arm and bucket
controls to ensure they are
WARNING
locked. Then, unlatch the seat
belt and exit the loader. Do not
enter or exit with the engine
running unless as specified in
this manual or under specific
service and backhoe operating
Fig. 3.8A
Fig. 3.8B
procedures.
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