EMC 5-3810-206.35/25
1
Gasket
12
Spur gear
2
Plate
13
Housing
3
Idler gear
14
Gasket
4
Thrustwasher (2 rqr)
15
Adapter
5
Sleeve bearing
16
Plug
6
Thrust flange
17
Shaft
7
Bolt (3 rqr)
18
Hose clamp r2 rqr)
8
Ring
19
Boot
9
Bearing retainer
20
Bolt (4 rqr)
10
Sleeve bearing (2 rqr)
21
Flatwasher (4 rqr)
11
Ring spacer (2 rqr)
22
Pin
Figure 3-38. Blower drive and idler gear, exploded view.
(d) Remove plug (16) from housing
operation.
All gears and bearings are pressure
lubricated.
(13).
(e) Remove bearing retainer (9), front
b. Engine Model D333TA. The timing gear train of
ring spacer (11) and sleeve bearing (10) from housing
this engine is located at front end, and consists of an
(13).
accessory drive gear, camshaft gear, accessory drive
(f) Remove spur gear (12) from
idler gear, camshaft gear, oil pump idler gear, and an oil
housing (13).
pump drive gear.
(g) Remove shaft (17) from spur gear
(12), and rear ring spacer (11) and sleeve bearing (10)
3-30. Rear Plate and Timing Gear Train (Engine
from housing (13).
(2) Timing gears and drive gears removal and
Model 687C-18-ES)
disassembly.
(a) Idler gear.
a. Preparation for Removal.
1. Remove three bolts (21, fig. 3-39)
(1) Remove engine (para 2-9).
from thrust flange (22).
(2) Remove flywheel housing (para 3-40).
2. Remove thrust flange (22).
3. Remove thrustwasher (4, fig. 3-38)
b. Removal of Timing Gear Train and Drive Gears.
then slide idler gear (3) off plate (2) and remove
(1) Blower
drive
gear
removal
and
remaining thrustwasher (4).
disassembly.
4. Remove bearing (5) from gear (3).
(a) Remove four bolts (20, fig. 3-38)
5. Remove plate (2) and gasket (1)
and flatwashers (21) securing adapter (15) and housing
from rear plate (1, fig. 3-39).
(13) to plate (2).
(b) Cam gear.
(b) Remove adapter (15) and gasket
1. Remove nut (9) from camshaft (8).
(14) then slide blower drive out of plate (2).
2. Use a puller and remove gear (11)
(c) Remove ring (8).
from camshaft and dowel pin (10).
AGO 20051A
3-47
