POWER TRAIN 2250 SERVICE/MAINTENANCE MANUAL
7-16
Published 07-19-16, Control # 249-01
PUMP DRIVE DISCONNECT
General
A gear-type, manually operated disconnect is mounted
inside the pump drive. The disconnect allows the pump drive
to be disconnected from the engine, thereby reducing engine
load and making startup easier in cold weather. The
disconnect can be engaged or disengaged only while the
engine is off.
Disconnect the pump drive for the following reasons:
• To make the engine start easier during cold weather
• When the hydraulic pumps are being serviced
Adjustment
See Figure 7-13 for the following procedure.
Adjust the pump drive disconnect as follows.
1. Set the length of the shift rod (9) to 699 mm (27-1/2 in),
lock it in place with the hex nut (8), and install the rod.
2. Set the length of the pull rod (12) to 327 mm (12-7/8 in),
lock it in place with the elastic stop nuts (11), and install
the rod.
3. Position the rocker arm (4) as follows.
a. Loosen the set screws with lock nuts (5) and adjust
the set screws against the base plate (3) until the
hook (2) can fully engage the latch assembly (1)
without interference (see View A).
b. Lock the set screws in place with the lock nuts.
4. Install the spring (6) so the hook is held in the fully
engaged position.
5. Install the control rod (7) as follows.
a. The approximate assembly length from centerline to
centerline of the ball joints (10) on the control rod is
624 mm (24-9/16 in).
b. Adjust the length of the control rod to retain a
minimum clearance of 3 mm (1/8 in) (see View B)
between the hook and the latch assembly when the
squeeze trigger (13) is compressed against the
pump drive disconnect handle and the shift rod is
shifted through the engaged and disengaged
positions.
CAUTION
Pump Damage!
The pump drive bearings can be damaged if the engine
runs for more than two minutes with the pump drive
disengaged.
Do not engage or disengage the pump drive with the
engine running because gear damage could result.
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