TM 5-3895-356-14&P
THE INSTALLATION - IF YOU DO, DAMAGE TO THE
SYSTEM WILL OCCUR.
B. COUPLING FIT
Your couplings, both pump and motor, must be a snug,
slip fit on the drive shaft Mounting flanges must be
concentric They also must be at right angles to both
the drive shaft and the output shaft Check for
concentricity and angle tolerance.
When you use
semiflexible couplings, maintain tolerances normally
required by the type connection you employ If you make
a direct coupling from the power shaft to the pump shaft,
you must use a dial indicator In this case, tolerances
must be within 0.001 in total indicator run-out Do not
proceed with installation until complying with stated
coupling fit tolerances.
C. MOUNTING
After the above conditions have been met, mount the
pump First grease the coupling with noncorrosive
grease, then bolt the pump to Its mounting flange Follow
the same procedure for mounting the motor, first
Figure 233.
greasing the coupling and then bolting the motor to its
High pressure relief valve tolerance
mounting flange.
This completes reassembly of the Dynapower motor.
D. USE GOOD HYDRAULIC PRACTICES
Be sure the interiors of reservoir, connections and fittings
PRECAUTIONS FOR RE-STARTING SYSTEM
are perfectly clean
Certain precautions should be taken prior to restarting
E. BEFORE OPERATION
your system after completion of a maintenance
Be sure all lines and connections are set up according to
operation.
your system layout
All of the procedures below should be followed If a
F. BE SURE SYSTEM IS FULL
complete overhaul of your system was performed Some
Completely fill the reservoir, being sure that all the fluid
of the more basic repairs do not require adherence to all
goes through the mesh or gauze strainer Loosen fitting,
of these procedures, however, you should review the
and bleed the line at the charge pump enough to check
material below and follow those steps which are
for presence of hydraulic fluid The fluid must have
pertinent.
arrived at this point to assure that the system can be
started without being damaged If no fluid Is present, It
A. ROTATION CHECK
may be necessary to apply air pressure to the tank Do
Make a careful comparison of the direction of rotation of
not apply more than 10 PSI If oil still Is not present,
your power source with reference to the direction of
check the entire line for possible plugging.
rotation shown by the arrow on the Dynapower charge
pump cover It is absolutely essential that direction of
G. DISCONNECT LOAD
rotation of power source be the same as that shown by
If possible, disconnect the motor coupling from whatever
the arrow on the charge pump cover.
shaft it Is attached to, so that the transmission may be
started without putting an excessively heavy load on it
CAUTION
Disconnecting the load at some other point beyond the
No matter whether your power source is diesel, gasoline,
motor or employing other means of minimizing load on
steam or electric, no matter If Its direction is clockwise or
the system also are acceptable Now - be sure the pump
counterclockwise - if the direction of your power source
control lever is In neutral position Recheck power source
rotation Is not the same as the direction shown on the
rotation to assure It matches with rotation indicated on
charge pump cover plate - DO NOT PROCEED WITH
the cover of the charge pump.
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