TM 9-1829A, Maintenance Manual, Page: 5 / 100

TM 9-1829A, April 1944 5/100 2021-07-07
Figure 57: Removing hair spring pin .................................................................................................................... 45
Figure 58: Removing hair spring, using puller (T-66296) .................................................................................... 46
Figure 59: Front jewel assembly ........................................................................................................................... 46
Figure 60: Removing magnet shaft collar, using dismantling wrench (T-170654) .............................................. 46
Figure 61: Smoothing out flare in magnet shaft, using fixture (T-170666 with Det. 7) ....................................... 47
Figure 62: Removing burs from magnet shaft ...................................................................................................... 47
Figure 63: Staking intermediate gear, using fixture (T-178717) .......................................................................... 48
Figure 64: Removing oil wick plug ...................................................................................................................... 48
Figure 65: Pressing collar on magnet shaft, using fixture (T-170666 with Det. 1)............................................... 49
Figure 66: Flaring magnet shaft, using fixture (T-170666 with Det. 6) ............................................................... 49
Figure 67: Replacing oil wick plug....................................................................................................................... 50
Figure 68: Adjusting front jewel, using special tool (T-178705).......................................................................... 50
Figure 69: Magnet strength tester (408165, on frame and magnet assembly) attached to calibrating machine (T-
170645) ................................................................................................................................................................. 51
Figure 70: Replacing hair spring, using assembly kit (T-29) ............................................................................... 52
Figure 71: Adjusting hair spring tension by turning collet on staff, using adjuster (T-51742) ............................. 53
Figure 72: Aligning total odmeter figure wheels with dial window, using spanner wrench (T-40783) ............... 53
Figure 73: Holding speedometer on calibrating machine (T-170645) and testing at 30 mph ............................... 54
Figure 74: Placing upper die of Bezel rolling fixture (T-178730) over speedometer ........................................... 55
Figure 75: Rolling bezel with fixture (T-178730) in arbor press .......................................................................... 55
Figure 76: Stewart-Warner speedometer with flat disk-type magnet disassembled ............................................. 56
Figure 77: Driving off pressed-on bezel, using remover (T-42358) ..................................................................... 57
Figure 78: Removing pointer ................................................................................................................................ 57
Figure 79: Removing elbow joint screw ............................................................................................................... 58
Figure 80: Removing bevel gear and sleeve assembly, using spanner wrench (T-49509) ................................... 58
Figure 81: Speedometer mechanism (dial removed) ............................................................................................ 58
Figure 82: Drilling out crimping at center of spur gear ........................................................................................ 59
Figure 83: Speedometer mechanism (odometer frame removed) ......................................................................... 59
Figure 84: Removing hair spring, using puller (T-66296) .................................................................................... 60
Figure 85: Removing second gear ........................................................................................................................ 60
Figure 86: Removing magnet shaft collar, using dismantling wrench (T-170654) .............................................. 61
Figure 87: Smoothing out flare in magnet shaft, using fixture (T-170666 with Det. 7) ....................................... 61
Figure 88: Driving out magnet retained by bevel gear ......................................................................................... 62
Figure 89: Magnet removed from frame ............................................................................................................... 62
Figure 90: Pressing collar on magnet shaft, using fixture (T-170666 with Det. 1)............................................... 63
Figure 91: Pressing bevel gear on magnet shaft, using fixture (T-170666 with Det. 1) ....................................... 63
Figure 92: Flaring magnet shaft, using fixture (T-170666 with Det. 6) ............................................................... 63
Figure 93: Driving second gear bushing in place ................................................................................................. 64
Figure 94: Magnet strengt tester (408164; on frame and magnet assembly) attached to calibrating machine (T-
170645) ................................................................................................................................................................. 64
Figure 95: Replacing hair spring, using assembly kit (T-29) ............................................................................... 65
Figure 96: Adjusting front jewel, using special tool (T-178705).......................................................................... 66
Figure 97: Replacing hair spring pin .................................................................................................................... 66
Figure 98: Staking intermediate gear, using fixture (T-178717) .......................................................................... 67
Figure 99: Odometer frame with total odometer in place ..................................................................................... 67
Figure 100: Trip odometer and attaching parts ..................................................................................................... 67
Figure 101: Mechanism with speed unit and odometer frame removed to show position of second and third gears
.............................................................................................................................................................................. 68
Figure 102: Moving magnet regulator, using adjusting kit (T-178715) ............................................................... 68
Figure 103: Stewart-Warner centrifugal tachometer ........................................................................................... 70
Figure 104: Stewart-Warner centrifugal tachometer, disassembled .................................................................... 70
Figure 105: Centrifugal tachometer mechanism installed .................................................................................... 71
Figure 106: Removing pointer, using lifter (T-29 Det. 3) .................................................................................... 72
Figure 107: Tachometer mechanism (dial removed) and rear view of dial .......................................................... 72
Figure 108: Loosening upper ball race lock nut ................................................................................................... 72
Figure 109: Unscrewing upper ball race ............................................................................................................... 73
Figure 110: Removing governor shaft .................................................................................................................. 74
Figure 111: Adjusting clearance between upper spider and upper ball race ......................................................... 74