Reassemble in reverse order.
c. Cleaning, Inspection, and Repair.
(1)Clean all parts in an approved cleaning solvent
and dry thoroughly, using low pressure compressed air
to blow filter element dry. Be sure all gummy sludge
has been removed from filter element.
(2)Visually inspect all parts for bends, breaks, or
distortion, and mounting hardware for stripped threads
or other defect.
(3)Repair by replacing all gaskets, then replace any
other part that is excessively worn, damaged or
defective.
3-64. Engine Oil Level Gage (Dipstick)
a. On Engine Model 687C-18-ES.
(1)Removal.
(a)Refer to figure 3-1 (6), reference number 53, and
remove dipstick from tube.
(b)Remove tube from bushing by turning in a
counterclockwise direction.
(c)Remove bushing from block.
(2)Installation. Install by reversing procedure used
Figure 3-44. Engine oil filters (for engine 687C-18-ES),
in (a), (b) and (c) above.
removal and installation.
b. On Engine Model D333TA.
(1)Removal.
(c)Repair by replacing damaged or defective part,
(a)Refer to figure 3-48 and remove dipstick from
all gaskets, and filter element.
tube.
b. For Engine Model DS33TA.
(b)Remove capscrew (2) and lockwasher (2) then
(1)Removal and installation. Remove drain plug
remove tube from oil pan.
(view A, fig. 3-46) and drain oil filters, disconnect oil
(2)Installation. Install by reversing procedure in
lines, remove six capscrews and lockwashers then
steps (a) and (b) above.
remove oil filter base from engine.
(2)Disassembly and reassembly. Refer to view B of
3-65. External Oil and Ventilation Lines
a. On Engine Model 687C-18-ES.
sequence. Reassemble in reverse order.
(1)Removal.
(3)Cleaning, inspection and repair.
(a)Loosen coupling nut (fig. 3-49) and remove air
(a)Clean all parts except filter element, which is
box drain tube from clamp.
discarded, in an approved cleaning solution and dry
(b)Remove crankcase ventilation line by removing
thoroughly.
items 4 through 12 in sequence.
(b)Visibly inspect all parts for deformation, stripped
(c)Remove remaining external oil lines in a similar
threads, or excessive wear. Inspect the three by-pass
manner.
valves and the seating surfaces within filter base for
(2)Installation. Install external oil and ventilation
wear or damage. Inspect springs for loss of tension or
lines by reversing procedure in steps (a) (b) and (c)
deformation. Inspect packings, seals and gaskets for
above.
signs of damage or deterioration.
b. On Engine Model D333TA. Remove and install
(c)Repair by replacing damaged or defective parts.
external oil and ventilation lines from engine model
D333TA in a manner similar to that described in a
3-63. Engine Oil Strainer (for Engine Model
above.
687C-1-ES)
3-66. Crankcase Breather and Oil Filler Pipe
perform step 1 and remove oil strainer from engine.
a. Oil Filler Pipe (on Model 687C-18-ES).
Install in reverse order.
(1)Removal. Refer to figure 3-45 and remove oil
3-55
