Graco 249057 Marine Sanitation System User Manual


 
12 310643
Service
Fig. 14. Soak all leather packings in SAE 30W oil for 1
hour minimum prior to assembly. Stack male gland
(219) 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) and backup washer (229) (note orientation) 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. 14
210
218
206
208
219
217
Not
used on
248204
253056
255968
ti3941a
229
216
Fig. 10. Install ball (206) in piston rod. If Loctiter is ap-
plied to piston valve threads, ensure that none gets o n
ball. Install piston valve on piston rod.
Torque as follows:
27 +/--3 ft-lb (Model 248204, 253056, 255968,
277069)
55 +/--3 ft-lb (Model 248205, 249057, 249059,
277070, 257146)
Fig. 15
206
7575A
Fig. 16. Grease piston packings.
Fig. 16
ti7578c
C
A
UTION
Do not slide piston a ssembly into top of sleeve as
this may damage piston pac king.
Fig. 17. Slide p iston assembly into bottom o f sleeve.
Assure V -packing and u- cup are not rolled over or
damaged. Mark IV: Install o-ring (231) on sleeve
spacer (230). Install sleeve spacer on sleeve.
Fig. 17
7577b
ti7341a
Mark IV
Fig. 18. Grease top inch or two of piston rod that will
go through the cylinder throat packings.
7579A
Fig. 18