Sentry Saf-T-Vise STV-HP1, Installation, Operation & Maintenance Manual, Page: 8 / 16

8 Sentry Equipment Corp
Changing a Rod/Shaft and Replacing a Seal
Tools needed
ƒ
Medium crescent wrench
ƒ
Permanent marker
ƒ
¼" NPT nipple 2"–4" (5–10 cm) in length (for atomizers or quills only)
ƒ
Hex key set
ƒ
Small pick or screwdriver
ƒ
Clean rag
ƒ
Seal Installation Tool (for Teflon seals only)
– P/N 2-07815E for 3/8" OD rod/shaft
– P/N 2-07815F for ¼" OD rod
ƒ
New seal for holder (Teflon or graphoil as needed)
ƒ
Molykote 55 lubricant or other fine viscosity lubricant
ƒ
Anti-seize lubricant
ƒ
320 grit or finer sandpaper
ƒ
Cleaner/solvent
1.
Remove the rod/shaft
a. With the holder removed from the line, loosen the locking collet and slide the rod/shaft to the fully inserted
position, leaving 1" (2 5 cm) between the top of the holder and the adapter lock nut
b.
Tighten the locking collet bolt to 35 ft-lb (47 45 Nm)
c. Remove adapter
ƒ
Coupon holder only:
– If using a flat coupon, use a permanent marker to mark the rod to show where the orientation arrow points
on the shaft (reference the arrow at the top of the shaft)
– Use a medium crescent wrench to loosen the adapter lock nut
– Remove both the adapter and the lock nut
ƒ
Atomizer shaft or quill shaft:
– With a permanent marker, mark the rod to show where the orientation arrow points on the shaft (reference
the arrow at the top of the shaft)
– If fluid inlet does not have wrench flats, use a ¼" NPT nipple threaded into the fluid inlet adapter to remove
the adapter from the shaft If the adapter has a multi-port valve, you can use it to aid in removal
d. Loosen the collet and slide the shaft out of the body of the holder
2.
Separate the upper and lower body of the holder
a. Use a hex key to loosen (but not completely remove) the small set screw on the upper body
Make sure the set screw is loose . Failure to loosen the set screw can cause permanent damage to the holder .
b.
With the set screw loose, remove the upper body
Â
NOTE
If the upper body is difficult to remove, stop immediately and make sure that the set screw is loose .
3. Replace the seal
a.
With the upper body removed, use a pick or small screwdriver to gently pick out the old seal
b. Clean the seal body of the holder with a clean rag