Data. - TM-9-2520-246-340037

TM 9-2520-246-34

(7) Fifth Speed Power Flow. Power is

transmitted by the input gear, which is coupled to the

mainshaft by the fourth-fifth speed synchronizer,

directly to the mainshaft. Since the interlocking action

of the synchronizer in effect makes one continuous

shaft of the input shaft and mainshaft, the drive here

is direct, i.e., a 1.00-1.00 ratio. (See fig. 3-12, view F.)

3-3. Data.

National stock number . . . . . . . . . . 2520-00-347-4520

Ordnance number . . . . . . . . . . . . . . . . . . . . . . . 7520995

Make . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Spicer

Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3052

Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Synchromesh

Speeds:

Forward . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Reverse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Gear types:

Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Helical

Mainshaft (except first-reverse) . . . . . . . . . Helical

Mainshaft (first-reverse) . . . . . . . . . . . . . . . . . . Spur

Countershaft (except first) . . . . . . . . . . . . . . Helical

Countershaft first . . . . . . . . . . . . . . . . . . . . . . . Spur

Reverse idler . . . . . . . . . . . . . . . . . . . . . Spur-helical

Bearings:

Input shaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ball

Mainshaft front . . . . . . . . . . . . . . . . . Straight roller

Mainshaft rear . . . . . . . . . . . . . . . . . . . . . . . . Ball

Countershaft front . . . . . . . . . . . . . . Straight roller

Figure 3-2. Transmission Models 3052 and 3053A

Equipped With a Power Takeoff.

Countershaft rear . . . . . . . . . . . . . . . . . . . . . . . . Ball

Reverse idler . . . . . . . . . . . . . . . . . . . Straight roller

(4) Second Speed Power Flow. Power is

Lubrication capacity:

transmitted by the countershaft second-speed reverse-

W/O pto . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 pt

idler gear to the mainshaft second-speed gear, which is

W / p t o . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 pt

coupled to the mainshaft by the second-third gear

Input shaft size:

synchronizer, and to the main shaft. (See fig. 3-12,

Spline diameter . . . . . . . . . . . . . . . . . . . . . . 1.499 in.

view C.)

Number of splines . . . . . . . . . . . . . . . . . . . . . . . 10

Full length of splines . . . . . . . . . . . . . . . . . 2.375 in.

(5) Third Speed Power Flow. Power is

Mainshaft (output end) size:

transmitted by the countershaft third-speed gear and

Spline diameter . . . . . . . . . . . . . . . . . . . . . 1.499 in.

to the mainshaft third-speed gear, which is coupled to

Number of splines . . . . . . . . . . . . . . . . . . . . . . . . . . 10

the mainshaft by the second-third speed synchronizer,

Full length of splines . . . . . . . . . . . . . . . . . 1.906 in.

and through the mainshaft. (See fig. 3-12, view D).

Gear ratios:

First speed . . . . . . . . . . . . . . . . . . . . . . . 7.55 to 1.00

(6) Fourth Speed Power Flow. Power is

Second speed . . . . . . . . . . . . . . . . . . . . . 4.18 to 1.00

transmitted by the countershaft fourth-speed gear

Third speed . . . . . . . . . . . . . . . . . . . . . . 2.45 to 1.00

through the mainshaft fourth-speed gear, which is

Fourth speed . . . . . . . . . . . . . . . . . . . . . 1.45 to 1.00

coupled to the mainshaft by the fourth-fifth speed

Fifth speed . . . . . . . . . . . . . . . . . . . . . . . 1.00 to 1.00

synchronizer, and to the mainshaft. (See fig. 3-12,

Reverse . . . . . . . . . . . . . . . . . . . . . . . . 7.36 to 1.00

view E.)

3-2