Issued July 2024
Pumps
Copyright 2024, The Heil Co.
Printed in the U.S.A.
Pumps
41
MOUNT PUMP MONOBLOCK TO TANDEM PUMP
Follow these steps when mounting a monoblock to the tandem pump.
1. Loosen the rear end cap bolts and front mounting cap bolts to allow slight movement between the P1, center pump, and
P2 housings. This aligns the P1 and P2 pressure ports with the monoblock.
2. Mount the monoblock using the eight (8) cap screws with hi-collar lock washers and torque the cap screws. NOTE:
Make sure the o-rings stay in place.
3. Re-torque the bolts on the rear end cap and front mounting cap housings of the pump.
4. If either the unloader valve cartridge or the pilot valve cartridge (that screw into the unloader valve cartridge) is removed,
it needs to be re-torqued. Re-torque the unloader cartridge to 110 ft. lbs. and the pilot cartridge (not shown) to 15 ft. lbs.
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