Service
310643U 5
6. Unscrew piston valve from piston rod. Clean and
inspect parts. The piston has a special thread lock-
ing/sealing patch. Do not remove the patch. The
patch allows four disassembly/assembly procedures
before it is necessary to apply thread sealant to the
threads.
7. Remove packings and glands from piston rod.
8. Remove throat packings and glands from cylinder.
Discard throat packings and glands.
Assembling the Pump
1. Soak all leather packings in SAE 30W oil for 1 hour
minimum prior to assembly. Stack male gland (204)
on piston rod. Alternately stack UHMWPE (208) and
leather (218) packings (note orientation) on piston
rod. Install female gland (217). Install piston wiper
(216) (note orientation) and backup washer (229) on
piston valve (210). Threads are good for four
repackings. Use thread sealant on piston valve
threads after four repackings.
COMPONENT RUPTURE HAZARD
To reduce the risk of serious injury from pressurized
fluid, do not clean or wipe the piston valve threads.
Cleaning the piston valve threads could destroy the
special sealing patch and cause the piston valve to
come loose during operation.
ti3940b
Not
used on
248204,
253056,
255968
ti7573b
Not
used on
248204,
253056,
255968
210
ti7574d
Not
used on
248204,
253056,
255968
