PRESTO OWNER’S MANUAL: HPT 50 & 55 SERIES —
Page 19
3. Lift will not drop
3.1 Check the chain (1-8)
1. Replace a broken chain
2. Check the shaft (1-12) and screw (1-21). Be sure
the shaft (1-12) is fixed on pump body by screw (1-21).
If shaft (1-12) is not fixed, the chain will be damaged by
handle operation. If the chain and shaft have no prob-
lem, continue to step 3.2.
3.2: Replace valve assembly (1-42)
Refer to step 1.5
4. Pallet Truck is leaking
4.1a-b: Leak from piston
4.1a: Take out 1-17
4.1b: Renew seal 1-19 & 1-20
4.2a-c: Leak from piston carriage
4.2a: Take out 1-17
4.2b: Take out 1-18
4.2c: Renew seal 1-32
