Service Manual

HY13-1521-M2/US Service Manual
General Information Series HB Hydrostatic Transmission
UHT Flow Test Kit Instructions
SK000251
Parts List
Item Qty Part Number Description Torque
1
1 414002 SAE Swivel Fitting 525 in lbs.
2 1 411102 Needle Valve 525 in lbs.
3 2 414003 Gauge Fitting “T” 165-525 in lbs.
4 2 411103 3000 PSI Pressure Gauge 165 in lbs.
5 2 411104 Hose Assembly 525 in lbs.
6 2 414005 Reducer Fitting 525-950 in lbs.
7 1 411105 20 GPM Flow Meter 525 in lbs.
8 1 409350 Diagnostic Plug 525 in lbs.
9 1 SAE-J514-8-8-070120CF Straight Thread Fitting 525 in lbs.
- 1 SK000251 Service Bulletin N/A
Overview:
The Flow Test Kit allows the dealer to easily determine if UHT pump is faulty by isolating the
pump section from the wheel motor. The following information describes how to test the pump
by installing the Flow Test Kit and simulating a wheel motor load.
Procedure:
1. Raise the drive tires off the ground and block the remaining
tires to prevent movement of the vehicle during testing.
2. Remove wheel from the hub to gain access to motor.
3. Ensure the pump bypass lever is in the “Closed” position
(horizontal).
4. Isolate the pump from the wheel motor by removing the two
plugs from the top of the wheel motor assembly and installing
the Flow Test Kit. Install the Diagnostic Plug in port “A”, and the
Straight Thread Fitting in port “B”. Take precautions to ensure
no debris gets into the wheel motor system ports.
There is no need to determine the direction of flow with the
Parker flow tester. The flow meter may be connected in either
direction into the high pressure system lines.
9
Parker Hannifin Corporation
Hydraulic Pump/Motor Division
Greeneville, Tennessee USA
WARNINGS
Portions of this procedure
require testing while the
vehicle is operated in an
elevated position.
Ensure vehicle is properly
secured to prevent injury
to the service technician
or bystanders.
Do not attempt any ad-
justments with the engine
running. When working
around vehicle linkages,
use extreme caution.
High temperatures can be
generated.
Follow all safety proce-
dures in the vehicle own-
er’s manual.