Graco 310643u Heat Pump User Manual


 
Service
310643U 11
14. Remove packings and glands from piston rod.
15. Soak all leather packings in SAE 30W oil for one hour
minimum prior to assembly. Stack male gland (219)
on piston rod. Alternately stack UHMWPE (208)and
leather (218) packings (note orientation) on piston
rod. Install female gland (217). Install piston wiper
(216) and backup washer (229) (note orientation) on
piston valve (210). The special sealing patch on pis-
ton valve threads is good for four repackings. Use
thread sealant on piston valve threads after four
repackings.
16. Install ball (206) in piston rod. NOTE: If thread seal-
ant is applied to piston valve threads, make sure
none gets on ball. Install piston valve on piston rod.
Torque as follows:
17. Grease piston packings.
ti3939a
Not used on
248204,
253056,
255968
210
218
206
208
219
217
229
216
ti3941a
Not
used on
248204,
253056,
255968
Models Torque
248204, 253056,
255968, 277069
27 +/- 3 ft-lb (36.6 +/-4.1 N•m)
248205, 249057,
249059, 277070,
257146
55 +/- 3 ft-lb (74.6 +/-4.1 N•m)
ti7575b
206
ti7575b
ti7578c