Graco Series A Mark Vt International Model 287929 Heat Pump User Manual


 
7310894
Service
C
A
UTION
Never slide piston assembly (222) into top o f
sleeve (220) as this may damage piston packings.
Fig. 14. Grease o-rings (221) and place inside
cylinder (205) and on sleeve (220). Slide sleeve (220)
into bottom of c ylinder (205). Replace o-ring (207) if
desired.
Fig. 14
ti6193a
221
207
205
220
Place i nside cyl-
inder ( 205) and
push to shoulder
with sleeve (220).
Note: O-ring (207) is not required for safe pump opera-
tion.
Fig. 15. Grease top inch or two of piston r od (222) that
goes through the sleeve/cylinder assembly throat
packings (205). Grease piston packings at bottom of
piston rod.
Carefully slide piston assembly (222) into bottom of
sleeve/cylinder as sembly (205) until pump rod pro-
trudes at the top and piston packings are totally inside
the sleeve (220).
Fig. 15
222
ti6273a
205
207