secure with coupling (40) and clamps (37 and 38).
KEY to figure 7-1--Continued:
66. Flat washer
(4) Position gasket (36) onto exchanger (41),
47. Gasket
67. Skin
position seal (35) and slide exhaust (34) in on top of
48. Gasket
68. Gasket
exchanger (41 ) with gasket (36) and secure with
49. Gasket
69. Channel
washers (33) and bolts (32), secure (35) to exhaust 134)
50. Clamp
70. Bolt
with clamp (31).
51. Seal
71. Flat washer
(5) Install plumbing connections.
52. Bolt
72. Flange
53. Washer
:73. Gasket
7-4. Exhaust System
54. Washer
74. Flange
The exhaust system consists of a ring assembly
55. Exhaust stack
.75. Plenum
mounted to the enclosure, exhaust box, and a bellows
56. Gasket
76. Insulation
and diffuser interconnecting the engine exhaust to the
57 . Gasket
77. Insulation
exhaust box.
58. Gasket
78. Frame
a. Disassembly.
59. Tube assembly
79. Coupling clamp
(1) Loosen and remove clamp (50, fig. 7-1, sheet 3 of
60. Union
80. Gasket
3), remove bolts (52), washers (53, 54) from exhaust
61. Nut
81. Bolt
stack (55).
62. Flat washer
82. Flat washer
(2) Remove exhaust stack (55) from top of
63. Bolt
83. Bellows
plenum (75), then remove gaskets (56, 57, 58) from top
64. Spacer
84. Gasket
of frame (78) and seal (51) from top of exhaust stack
65. Bolt
85. Diffuser
(55).
7-3. Heat Exchanger
(3) Remove tube assembly (59) from union (60)
a. Removal.
on bottom of frame (78).
(4) Remove water system heat ducting from top
(1) Remove clamp (31, fig. 7-1, sheet 2 of 3),
of frame (78).
bolts (32), and washers (33), then remove muffler (341,
(5) Remove coupling clamp (79), gasket (80),
seal (35) and gasket (36) from exchanger (41).
bolts (70), washers (71), flange (72) and gasket (73)
(2) Loosen and remove clamp (37, 38), upper
from frame (78) inlet.
coupling (40) and exchanger (41) from outlet flange
(6) Remove bellows (83), gaskets (73) and
of valve (42). Remove tube (27) from union (3:9 1.
flange (74) from frame (78).
(3) Remove lower coupling (40), and valve
(7) Remove bolts (81), washers (82), and
(42).
diffuser (85) with gasket (84) from frame (78).
(4) Remove insulation (43) from around support
(8) Remove bolts (65), washers (66), skin (67),
(46), then remove bolts (44) and washers (45) securing
gasket (68) and channel (69) from frame ( 78).
support (46). Remove support (46) and gaskets (47, 48,
(9) Lift plenum (75) from frame (78), then
49, fig. 7-1, sheet 3 of 3) from exhaust box.
remove insulation (76, 77). Remove nuts (61), washers
(5) Discard gaskets (47, 48, 49, 36) and seal
(62), bolts (63), and frame (78), then remove spacers
(35) at each overhaul.
(64).
b. Cleaning, Inspection and Repair.
b. Cleaning, Inspection and Repair.
(1) Clean all parts with a rag moistened in an
(1) Clean exhaust system components with an
approved cleaning solvent.
approved solvent and stiff bristled brush.
(2) Inspect parts for cracks, dents or other
(2) Inspect components for cracks, broken
obvious damage.
welds or other damage.
(3) Inspect all threaded parts for stripped,
(3) Replace any part damaged beyond simple
crossed, or peened threads.
repair.
(4) Repair minor cracks and dents using
(4) Replace gaskets (56, 57, 58, 68, 73), and
simple shop repair practices.
seal (51) at each overhaul regardless of condition.
(5) Replace all parts damaged beyond simple
c. Assembly.
repair.
(6)
Replace gaskets and seals at each
(1) Wrap plenum (75,fig. 7-1,sheet 3 of 3) in
overhaul.
insulation (77).
c. Installation.
(2) Fill void between plenum (75) and frame
(78) with insulation (76).
(1) Install insulation (43, fig. 7-1, sheet 2 of 3),
(3) Install spacers (64), frame (78), and secure
around support (46). Install gasket (47 through 49) onto
with bolts (63), washers (62) and nuts (61).
exhaust box, then install support (46) with insulation (43)
(4) Install channel (69), gasket (68) and skin
onto gaskets (47 through 49) and secure with washers
(67). Secure with washers (66) and bolts (65).
(45) and bolts (44).
(5) Install gasket (84) and diffuser (85) and
(2) Install valve (42) onto support (46) and
secure to bellows (83) with washers (82) and bolts (81).
secure with one coupling (40).
(3) Install exchanger (41) onto valve (42) and
7-7
