AF0475LXXXXXX-XX-X Page 3 of 4
PUMP DISASSEMBLY
NOTE: All threads are right hand. Disconnect air supply
and relieve all system pressure prior to servicing. Carefully
remove the parts, inspect for damage, nicks or excessive wear
and determine if any parts will need replacement.
1. Clamp (2) extension tube horizontally in a vise. Unthread
from air motor base. Take care to support motor weight
until the connecting rod is also disconnected.
2. Pull (1) connecting rod up until ats for 5/8” wrench are
exposed.
3. Use 5/8” wrench flats on each rod to unthread (1) con-
necting rod from the air motor rod.
4. Clamp (4) lower tube horizontally in a vise. Use a rod
or pipe to unthread and remove (8) primer tube. Allow
primer (9) to pull (12) spacer sleeve, (13) gasket and (14)
valve seat out of the (8) primer tube as it is being re-
moved.
5. Remove (10) retainer ring and unthread (9) primer from
(7) primer rod.
6. Remove (11-18) from (6) primer rod.
7. Remove (15) truarc ring, releasing (16) “U” cup. NOTE: Do
not remove (17) guide unless replacement is necessary.
8. With (4) lower tube still clamped horizontally in a vise,
unthread and remove (2) extension tube and (19) gasket.
9. Using a the 5/8” wrench ats on the (1) connecting rod
and the 3/4” wrench flats on the plunger (3), unthread
and remove the (1) connecting rod from the (3) plunger.
NOTE: Do not damage the o.d. of (3) plunger in any way.
10. Using a 5/32” diameter rod in the cross hole of (9) primer
rod and the 3/4” wrench ats on the plunger, unthread
and remove (9) primer rod, releasing (6) ball and (5) ball
stop.
PUMP REASSEMBLY
NOTE: Replace all soft parts with new ones included in
the repair kit. Refer to the illustration (Figure 2, page 2) for
“U” cup seal direction.
1. Assemble (5) ball stop and (6) ball into (3) plunger,
securing with (7) primer rod. NOTE 1: Torque (7) primer
rod to 50-60 ft lbs (67.8-81.3 Nm). NOTE 2: Items 3-7 are
not individually serviceable but must be replaced as an
assembly (97365).
2. Thread (1) connecting rod to (3) plunger, using 5/8” and
3/4” wrench ats respectively. NOTE: Tighten (1) con-
necting rod to 50-60 ft lbs (67.8-81.3 Nm).
3. Assemble (17) guide and (16) “U” cup into (18) valve
body, securing with (15) truarc ring. NOTE: Assemble
chamfered corner of (17) guide into (18) valve body rst.
4. Assemble (11) guide washer and (15-18) foot valve as-
sembly onto (7) primer rod.
5. Assemble (12) spacer sleeve, (13) gasket, and (14) valve
seat into (8) primer tube.
6. Thread (8) primer tube to (4) lower tube and hand
tighten.
7. Push piston assembly down as far as possible and thread
(9) primer onto (7) primer rod, securing with (10) retainer
ring.
8. Assemble (19) gasket and (2) extension tube to (4) lower
tube and hand tighten.
9. Ensure (91415) packings (3x), (90142) washer, (90143)
spring, and (90140) washer are secure inside of (AF0465)
air motor base.
10. Pull (1) connecting rod up until ats for 5/8” wrench are
exposed.
11. Using the 5/8” wrench ats on (1) connecting rod and
the air motor rod, thread and tighten. NOTE: Torque (1)
connecting rod to 50-60 ft lbs (67.8-81.3 Nm).
12. Assemble (2) extension tube to air motor base. Clamp
base horizontally in vise and tighten (8) primer tube to
340-360 ft lbs (461.0-488.1 Nm) in order to tighten tub-
ing components simultaneously.
DIMENSIONS
AIR INLET
61°
CENTERLINE OF
MATERIAL OUTLET
