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Maintenance
30 312666R
5. Loosen A and B side seals two turns.
6. Pull out mix chamber from back of fluid
housing. See Table 2 for appropriate size
drill to clean ports. Also see identification
chart under Drill Bit Kits, page 53.
Table 2: Impingement Port Drill Bit Sizes
7. Push mix chamber back into position.
8. Tighten A and B side seals.
9. Attach Front End, page 37.
10.Attach fluid manifold (M). Connect air (D).
Return gun to service.
Some mix chambers have counter bored
holes and require two drill sizes to clean
impingement ports completely.
F
IG
. 42
TI12097a
Impingement Port
IP
CB
IP
TI3533a
Mix Chambers RD and
FL, 2020 and 2929
Mix Chambers RD and FL,
4242 or larger
CB
Mix
Chamber
Impingement
Port (IP) Drill
Bit Size in.
(mm)
Counter-bore
(CB) Drill Bit
Size in. (mm)
RD2020 #76, .020 (0.50) #53, .060 (1.50)
RD0000 #69, .029 (0.70) #53, .060 (1.50)
RD0101 #58, .042 (1.00) N/A
RD0202 #55, .052 (1.30) N/A
RD0303 #53, .060 (1.50) N/A
FL2020 #76, .020 (0.50) #53, .060 (1.50)
FL0000 #69, .029 (0.70) #53, .060 (1.50)
FL0101 #58, .042 (1.00) N/A
FL0202 #55, .052 (1.30) N/A