(5) Remove two of the 13 bolts securing
(8) Remove four capscrews (8), lockwasher
housing to engine and install guide studs in their place to
(3), and plate (7) from housing (5).
facilitate removal.
(9) Remove plug (9) from housing (5).
(6) Remove all bolts (11 and 12, fig. 3-46)
(10) Install flywheel housing by reversing the
and lockwashers (10) then slide housing out on guide
procedures in steps (1) through (9) above.
studs. Remove housing (5) and gasket (6) from engine.
(7) Remove pointer (1), capscrew (2),
b. Cleaning, Inspection, and Repair.
Clean,
lockwasher (3), and cover (4) from housing (5).
inspect, and repair flywheel housing in manner similar to
that described in paragraph 340b above.
Section XII. LUBRICATION SYSTEM
3-42. General
The engine lubrication systems are pressure type, with
gear pumps forcing oil through filters and passages, to
accessories and valve operating mechanism.
This
section will cover maintenance to oil pans, oil pumps,
pressure relief, and bypass valves. Winterized models
have coolant tubes in oil pan to aid cold weather
operation.
3-43. Oil Pan for Engine Model 687C-18-ES
a. Removal and Installation.
(1) Remove engine (para 2-9).
(2) Remove 35 capscrews (8, fig.
lockwashers (7), oil pan (10), and gasket (1).
CAUTION
Pry oil pan from crankcase carefully
so as not to damage the mating
machined surfaces of pan and
(3) Install oil pan by reversing procedure in
steps (1) and (2) above.
b. Disassembly and Reassembly.
(1) Remove six capscrews (2, fig. 3-47),
lockwashers (3), and baffle plate (4).
NOTE
Tube and tube adapters are on
1
Gasket
6
Tube adapter
winterized models only.
2
Capscrew (6 rqr)
7
Lockwasher (35 rqr)
3
Lockwasher (6 rqr)
8
Capscrew (35 rqr)
4
Baffle plate
9
Pipe plug
(2) Remove two tube adapters (6) and tube
5
Tube
10
Oil pan
(5) from oil pan (10).
(3) Remove pipe plug (9) from oil pan (10).
Figure 3-47. Oil pan, exploded view.
(4) Reassemble by reversing procedure in
steps (1) through (3) above.
(2) Inspect mounting hardware for burs or
stripped threads. Inspect baffle plate, pan, and tube for
c. Cleaning, Inspection, and Repair.
bent, cracked or broken condition. Inspect adapters and
plug for damage.
(1) Clean all parts and dry thoroughly before
inspecting or reassembling the oil pan.
AGO 20051A
3-58
