Graco 253017 Instructions-Parts List Manual page 14

Replacing Wipers (Model 196078)
Clean the seal groves as follows:
1. Using a wooden or plastic tool to prevent damage
to the wiper, clean all material from the seal
grooves.
Install the wiper ring seals as follows:
1. Slide the first upper wiper ring (A) up from the
bottom of the plate to the top ring groove as shown
in fig. 1.
2. Install the first upper band (B) over the wiper ring,
placing it in the top groove of the wiper.
CAUTION
Do not over tighten the screw in the band. Over tight-
ening the screw will deform the wiper ring.
3. Secure the top band using the screw in the band.
4. Install the second upper band onto the bottom of
the wiper ring on the top groove of the wiper ring.
5. Secure the top band using the screw in the band.
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Service
B
6. Slide the second wiper ring up from the bottom of
the plate to the bottom ring groove.
7. Install the first lower band over the wiper ring on
the bottom groove, placing it in the top groove of
the bottom wiper.
CAUTION
Do not over tighten the screw in the band. Over tight-
ening the screw will deform the wiper ring.
8. Secure the top band using the screw in the band.
9. Install the second lower band onto the bottom of
the wiper ring on the bottom groove of the wiper
ring.
10. Secure the top band using the screw in the band.
CAUTION
Make sure the wipers are lubricated. Without lubrica-
tion, the wipers may tear.
11. using a lubricant compatible with the material to be
pumped, lubricate the ram plate wipers.
A
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