MAC/MTT-OPS-1
26 FEB 2019
SECTION 2
System Description
2-2
6. ROPE SEAL – Provides a seal around the rotating
pump shaft at the volute case. Constructed of
a graphite rope material that is designed to
drip water and allow shaft lubrication.
7. U
PPER/LOWER BEARINGS - Provide roller surface
for the pump shaft.
HYDRAULIC DRIVE MOTOR
M-4 Pump Drive Motor And Cross-over
Assembly
The M-4 pump rotates clockwise as viewed from
the drive end of the assembly:
The hydraulic drive motor may be installed in 4
different orientations depending on the water
pump location or application.
Hydraulic Drive Motor Port Identification
The hydraulic drive motor requires hydraulic flow
from a valve to the motor pressure port, return oil
flow to the hydraulic reservoir and a free to tank
case drain.
Clockwise rotation as viewed
from the drive end of the water
pump assembly.
6
1
7
3
4
5
2
SHAFT
ROTATION
CASE DRAIN
RETURN
PRESSURE
CASE DRAIN PORT