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5310643
Service
WARNING
COMPONENT RUPTURE HAZARD
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, causing pump bursting and
possible serious bodily injury.
Fig. 6. Unscrew piston valve from piston rod. Clean
and inspect parts. The piston has a special thread
locking/sealing patch. Do not remove the patch. The
patch allows four disassembly/assembly procedures
before it i s necessary to apply Loctiter to the threads.
Fig. 6
7576A
Fig. 7. Remove packings and glands from piston r od.
Fig. 7
Not
used on
248204
253056
255968
ti3940b
Fig. 8. Remove throat packings and glands from cylin-
der. Discard throat packings and glands.
Fig. 8
7573B
Not
used on
248204
253056
255968
Assembling the pump
Fig. 9. 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 pis ton
rod. Install female gland (217). Install piston wiper
(216) (note orientation) and backup washer (229) on
piston valve (210). The special sealing patch on piston
valve threads is good for four repackings. Use Loctiter
on piston valve threads after four repackings.
Fig. 9
216
218 208
204
217
210
Not
used on
248204
253056
255968
7574d
229