IMT 5525

Chapter 4 Parts 47
Cylinder (51721029)
4
A
A
9 5
15
17
15
7
8
6 314
11
2
18
18
SECTION A-A
SCALE 1/2
NOTES (IF TIED TO DRAWING, SEE REFERENCE NUMBER IN  ):
1 REPLACE ALL COMPONENTS OF THE SEAL KIT WHENEVER THE CYLINDER IS DISASSEMBLED. THIS
WILL REDUCE FUTURE DOWNTIME.
2 APPLY REGULAR GRADE ANTI-SEIZE AND LUBRICATING COMPOUND TO THREADS ON CYLINDER
HEAD ONLY. KEEP AWAY FROM ALL SEALS.
3 APPLY "LUBRIPLATE" NO. 630-2 MEDIUM HEAVY, MULTI-PURPOSE LUBRICANT, TO ALL PISTON, HEAD
GLAND, AND HOLDING VALVE SEALS, NYLON LOCK RING, CAST IRON PISTON RINGS, AND ROD
STINGER THREADS.
4 CYLINDER CLOSED 121.5"; OPEN 193.6"; STROKE 72".
5 ITEM #8, STOP TUBE, REPLACES 6A025017 WAFER LOCK. USE STOP TUBE INSTEAD OF WAFER LOCK
WHEN RESEALING CYLINDER.
6 PRESS LOCKING PIN (ITEM #4) INTO #15 HOLE DRILLED 0.188” DEEP.
7 TORQUE PISTON TO 400-430 FT-LB, HEAD TO 250 FT-LB, LOCKNUT TO 12 FT-LB, AND CAP SCREW TO
16 FT-LB.
51721029 PARTS LIST
ITEM
PART #
DESCRIPTION
QUANTITY
1.
51744138
SEAL KIT - IMT 3.75B X 1.75R 1.13 STGR
(INCL: 4, 8, 10-17)
1
2.
52718997
CASE ASM- 2.50B X 122.75 LG
1
3.
52718999
ROD ASM- 1.75 OD X 120.88L 1.13 STGR
1
4.
60125699
PIN - LOCK TUBE 0.19 OD X 0.065 WALL
1
5.
60127433
PISTON- 2.50B X 1.75R 1.13STGR
1
6.
60127435
HEAD- 2.50B X 1.75R
1
7.
60127437
STOP TUBE- 2.38OD X 1.81ID X 34.16 LG
1
8.
60138273
STOP TUBE (WAS 6A025017)
1
9.
72062322
COLLAR-LOCK 1-1/8-12 X 1.875 X 1/2
1
10.
76396597
SEAL- ROD 1.75 OD DZ
1
11.
7Q072216
O RING 1.12X 1.38X .12 70
1
12.
7Q072228
O RING 2.25X 2.50X .12 70
1
13.
7Q10P228
BACKUP RING-2.25 ID X 2.50 OD
1
14.
7R14P017
ROD WIPER - TYPE D 1.75 ROD
1
15.
7T2N4025
WEAR RING-PISTON 2.50 ODX .50W
2
16.
7T2NX420
WEAR RING-ROD 1.75 ID X 0.50 W
2
17.
7T66P250
PISTON SEAL-DYNAMIC 2.50in CP
1
18.
6C300017
STOP TUBE-1.75 ROD X 3.00 LONG
2
REV C 20120420