Hale Q Series Muscle - Manual (Page 75)

73 MUSCLE (Midship) Pumps Installation, Operation, and Maintenance Manual
p/n: 029-0020-63-0
Preventive Maintenance 
Relief Valve and TPM Test
When the relief valve is not in operation, maintain a setting above the normal operat-
ing pressure. Also see Figure 4-3: “TPM / PMD Relief Valve Control” on page 67.
1. Open the discharge valve, back to the water tank, less than 1/2 way. Also see
Section 3.3 “Pressure and Relief Valve Control” on page 39.
2. Increase pump pressure up to 150 PSI (1034 kPa).
3. Turn the relief valve handwheel counterclockwise until the relief valve opens and
the AMBER light illuminates. The master pressure gauge should drop at least 5
to 10 PSI (35 to 69 kPa).
4. Turn the control valve handwheel clockwise then counterclockwise a few times to
ensure that the handwheel turns freely. Observe the master pressure gauge and
indicator light for proper valve operation.
5. Reset the relief valve to its normal operational setting.
Governor Test
If your apparatus is equipped with an electronic governor, follow the manufacturer’s
instructions for weekly preventive maintenance.
Transfer Valve Test (Two-Stage Pumps Only)
1. For MANUAL transfer valves:
 With the engine turned OFF, turn the handwheel between VOLUME and
PRESSURE a few times to verify that the valve operates freely.
 Set the truck for pumping with the transfer valve set to VOLUME. See heading
“Relief Valve Procedures” on page 66. Also see heading “TPM Relief Valve
Procedures” on page 66.
 With the engine at IDLE speed, sat the transfer valve to PRESSURE.
 Verify that the discharge pressure gauge readings have approximately dou-
bled.
2. For POWER transfer valves:
 With the engine turned OFF, use either a 3/8” socket on the indicator hex nut
or insert a rod in the hole in the indicator hex nut and manually transfer the
valve back-and-forth to verify that the valve operates freely.
 Set the truck for pumping with the transfer valve set to VOLUME. Note the dis-
charge gauge readings.