Quincy QR-25 Series, Parts Manual

Page: 15 / 36

QR 325 Quincy Compressor
50215-106, January 2014 14 3501 Wismann Lane, Quincy IL - 62305-3116
CONNECTING ROD & PISTON GROUP 110247
(low pressure)
Item Part
Number Qty. Number Description
1 1 40139 connecting rod assembly (N.S.S.; see maintenance parts)
1.1 1 6442C rod, connecting (N.S.S.; see maintenance parts)
1.2 1 6443 bushing, connecting rod (N.S.S.; order 6443SR)
1.3 2 3493 connecting rod bolt
1.4 2 1836 washer
2 2 8648 retaining ring
3 1 8646 piston pin
4 1 8643 piston, low pressure
5 2 112781 oil ring expander
6 1 112780 oil ring rail
7 1 7351 piston ring
8 2 124471-L08 locknut, 3/8-24 unf (@ 35 ft.-lbs.)
9 2 6444 insert, connecting rod (N.S.S.; see maintenance parts)
10 2 2584 piston ring
9 1 6444PR inserts, connecting rod (1 pair, standard size)
9 1 6444-010PR inserts, connecting rod (1 pair, .010 undersize)
1.2 1 6443SR replacement connecting rod bushing
4 1 8643-010 piston, low pressure (.010 oversize)
4 1 8643-020 piston, low pressure (.020 oversize)
8166A Piston Ring Set (standard)
includes piston rings, oil ring expander, & rails
4434-010 Piston Ring Set (.010 oversize, light blue color code)
includes piston rings, oil ring expander, & rails
4434-020 Piston Ring Set (.020 oversize, yellow color code)
includes piston rings, oil ring expander, & rails
8643X Piston Assembly, low pressure (standard size)
includes piston, piston pin, retaining rings & ring set
8643X010 Piston Assembly, low pressure (.010 oversize)
includes piston, piston pin, retaining rings & ring set
8643X020 Piston Assembly, low pressure (.020 oversize)
includes piston, piston pin, retaining rings & ring set
6442X Replacement Connecting Rod Assembly (standard)
includes connecting rod assy., connecting rod inserts, & locknuts
Maintenance Parts
*
*
N.S.S. = Not Sold Separate
@ Indicates torque value (dry threads). Tighten multiple bolts, capscrews & hex nuts in a criss-cross or alternating pattern. Bring
each fastener to the recommended torque specification in even increments.
* One pair required for each connecting rod assembly.