Section IV- INSTALLATION and OPERATING INSTRUCTIONS
NOTE
A. INSTALLATION DRAWINGS
These pumps must be driven in the direction of the
arrows cast on the pump ring. If it is desired to change
B. DRIVE CONNECTIONS
the direction of drive rotation, it is necessary to reverse
the ring. (See Section VI-B-D and Figure 9. )
CAUTION
CAUTION
Vickers pump shafts are designed to be installed in
Never drive a pump in the wrong direction of rotation.
Seizure may result, necessitating expensive repairs.
tap. Pounding can injure the bearings. Shaft
tolerances are shown on the pump installation
drawings. (See Table I.)
D. PIPING AND TUBING
1. All pipes and tubing must be thoroughly cleaned
1. Direct Mounting - A pilot on the pump mounting
before installation. Recommended methods of cleaning
flange (Figure 5) assures correct mounting and shaft
are sand blasting, wire brushing and pickling.
NOTE
For instructions on pickling refer to Vickers instruction
sheet M-9600.
2. To minimize flow resistance and the possibility of
leakage, only as many fittings and connections as are
necessary for proper installation should be used.
3. The number of bends in tubing should be kept to a
minimum to prevent excessive turbulence and friction of
oil flow. Tubing must not be bent too sharply. The
Figure 5
recommended radius for bends is three times the inside
diameter of the tube.
and shaft alignment, provided the pilot is firmly seated in
the accessory pad of the power source. Care should be
E. HYDRAULIC FLUID RECOMMENDATIONS
exercised in tightening all flange mounting screws to
prevent misalignment.
The oil in a hydraulic system serves as the power
transmission medium. It is also the system's lubricant and
If gaskets are used between flanges, they should be
coolant. Selection of the proper oil is a requirement for
installed carefully so as to lay flat. Shaft keys and
satisfactory system performance and life. Oil must be
couplings must be properly seated to avoid slipping and
selected with care and with the assistance of a reputable
possible shearing.
supplier.
2. Indirect Drive - Chain, spur gear or vee belt
TWO IMPORTANT FACTORS IN SELECTING AN OIL
pulley drives may also be used with these pumps. Flat
ARE:
belt drives are not recommended because of the
1. Antiwear Additives - The oil selected must contain
possibility of slipping.
the necessary additives to insure high anti-wear
characteristics.
To prevent excessive side loads on the pump
bearings, it is important to check for correct alignment
2. Viscosity - The oil selected must have proper
and guard against excessive belt or chain tension.
viscosity to maintain adequate lubricating film at system
operating temperature.
C. SHAFT ROTATION
SUITABLE TYPES OF OIL ARE:
Vickers pumps are normally assembled for righthand
(clockwise) rotation as viewed from the shaft ends. A
1. Crankcase Oil meeting API service classification
pump made for lefthand rotation is identified by an "L" in
MS. The MS (most severe) classification is the key to
the model code (See Table II).
proper selection of crankcase oils for Mobile hydraulic
systems.
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