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6737X-XXX (en)

PN 97999-1207

repeated several times to assure small enough diameter has 
been achieved to insure proper assembly.

15.  Apply lubricant to inside of (9) tube and carefully slide (9) tube 

over the (72) wiper and (71) “W” packing or (76) packing set, 
and onto (6) outlet body. NOTE: Once the (9) tube has cleared 
the packings, a rubber mallet may be used to drive (9) tube 
into place.

16. Apply Loctite nickel anti-sieze to threads of (10) connecting 

rods and assemble three (10) connecting rods to (15) inlet 
body.

17.  Assemble (15) inlet body and components to (9) tube, aligning 

three (10) connecting rods with holes in (6) outlet body.

18. Assemble three (12) nuts to (10) connecting rods, securing 

assembly. NOTE: Tighten (12) nuts to 60 - 70 ft lbs (81.3 - 94.9 
Nm). NOTE: Draw (12) nuts equally together and then tighten.

TROUBLE SHOOTING

No material at outlet (pump continually cycles).

Check material supply. Disconnect or shut off the air supply 
and replenish the material. Reconnect.

Material on one stroke only (fast downstroke).

The (21) lower ball may not be seating in the (22) ball seat (see 
lower pump disassembly). Remove the ball from the seat, clean 
and inspect the ball and seat area. If the ball or seat is dam-
aged, replace.

Material on one stroke only (fast upstroke).

The (27) ball may not be seating in the (28) ball seat (see lower 
pump disassembly). Remove (27) ball from (28) ball seat, clean 
and inspect. If the (27) ball is damaged, replace. Check for worn 
or damaged packings and seals. Replace the packings and seals 
as necessary.

Material leakage out of the solvent cup or material appears on 
the pump plunger rod.

Relieve the pressure in the pump and tighten the solvent cup 
until leakage discontinues. If this procedure does not aid in 
stopping the leakage problem, the upper packings may be 
worn (see lower pump disassembly). Replace the packings as 
necessary.

  Viton® is registered trademark of the DuPont Company 
 ARO® is a registered trademark of Ingersoll-Rand Company 
 Loctite® and 242® are registered trademarks of Henkel Loctite Corporation 

Figure 3 

Models 6737X-CXX

6737X-LXX
6737X-PXX

6737X-RXX

Models 6737X-KXX

View A

View A

View B

View B

see view A

see view B

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