TH48-E80 Petroleum Transmission Caterpillar

Transmission Planetary

Usage:

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Illustration 1	g03107657

(1) Thickness of new discs and new plates for the No. 1 clutch

Thickness of one new 9P-7390 Friction Disc ... 5.59 ± 0.08 mm (0.220 ± 0.003 inch)

Thickness of one new 8P-2051 Plate ... 5.00 ± 0.08 mm (0.197 ± 0.003 inch)

(2) Thickness of new discs and new plates for the No. 2 clutch

Thickness of one new 173-3270 Friction Disc ... 5.59 ± 0.08 mm (0.220 ± 0.003 inch)

Thickness of one new 3P-7447 Plate ... 6.73 ± 0.08 mm (0.265 ± 0.003 inch)

(3) Thickness of new discs and new plates for the No. 3 clutch

Thickness of one new 102-8671 Friction Disc ... 5.56 ± 0.08 mm (0.219 ± 0.003 inch)

Thickness of one new 3T-3065 Plate ... 6.35 ± 0.08 mm (0.250 ± 0.003 inch)

(4) Thickness of new discs and new plates for the No. 4 clutch

Thickness of one new 102-8671 Friction Disc ... 5.56 ± 0.08 mm (0.219 ± 0.003 inch)

Thickness of one new 3T-3065 Plate ... 6.35 ± 0.08 mm (0.250 ± 0.003 inch)

(5) Thickness of new discs and plates for the No. 5 clutch

Thickness of one new 173-3270 Friction Disc ... 5.59 ± 0.08 mm (0.220 ± 0.003 inch)

Thickness of one new 3P-7447 Plate ... 6.73 ± 0.08 mm (0.265 ± 0.003 inch)

(6) Thickness of new discs and new plates for the No. 6 clutch

Thickness of one new 6Y-7219 Friction Disc ... 5.56 ± 0.08 mm (0.219 ± 0.003 inch)

Thickness of one new 3P-4057 Plate ... 6.73 ± 0.08 mm (0.265 ± 0.003 inch)

(7) ( 8) 9S-8597 Spring for the No. 3 clutch and the No. 4 clutch

Quantity ... 12

Length under test force ... 14.83 mm (0.58 inch)

Test force ... 250 N (56.3 lb)

Free length after test ... 30.73 mm (1.21 inch)

Outside diameter ... 41.53 mm (1.64 inch)

Color code ... white stripe

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Illustration 2	g01724997

(9) 7M-5813 Spring for the No. 1 clutch

Quantity ... 10

Length under test force ... 46.2 mm (1.82 inch)

Test force ... 133.4 ± 10.7 N (29.99 ± 2.41 lb)

Free length after test ... 58.9 mm (2.32 inch)

Outside diameter ... 14.27 ± 0.25 mm (0.56 ± 0.01 inch)

(10) ( 11) 4M-9592 Spring for No. 2 clutch and No. 5 clutch

Quantity ... 24

Length under test force ... 34.92 mm (1.37 inch)

Test force ... 116.5 ± 5.8 N (26.19 ± 1.30 lb)

Free length after test ... 44.70 mm (1.76 inch)

Outside diameter ... 14.27 ± 0.25 mm (0.56 ± 0.01 inch)

(12) 1S-8480 Spring for the No. 6 clutch

Quantity ... 12

Length under test force ... 66.5 mm (2.62 inch)

Test force ... 222.4 ± 17.8 N (50 ± 4 lb)

Free length after test ... 83.1 mm (3.27 inch)

Outside diameter ... 14.27 ± 0.25 mm (0.56 ± 0.01 inch)

Color code ... Yellow stripe

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Table 1
TH48-E80 Transmission Clutch Assignments
Operation	Gear Ratios	CLUTCHES						Transmission Output Speed at 800 RPM Input with LUC Engaged (RPM)	Transmission Output Speed at 1900 RPM Input with LUC Engaged (RPM)
Operation	Gear Ratios	1	2	3	4	5	6
Stall⁽¹⁾	−	O			O		O	−	−
Park	−				O		O	−	−
Neutral	−	O						−	−
1 Forward	3.339		O				O	240	569
2 Forward	2.453	O					O	326	775
3 Forward	2.200		O			O		364	864
4 Forward	1.808			O			O	442	1051
5 Forward	1.616	O				O		495	1176
6 Forward	1.359		O		O			589	1398
7 Forward	1.191			O		O		672	1595
8 Forward⁽¹⁾	.999	O			O			801	1902

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⁽¹⁾	If stall speed is present, eighth gear is no longer available.

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Table 2
Planetary Dimensions for the TH48-E80
Location	Shaft Diameter	Gear Bore	Carrier Bore
A1	42.395 ± 0.006 mm (1.6690 ± 0.0002 inch)	51.948 ± 0.010 mm (2.0452 ± 0.0004 inch)	42.418 ± 0.010 mm (1.6700 ± 0.0004 inch)
A2	42.395 ± 0.006 mm (1.6690 ± 0.0002 inch)	58.298 ± 0.010 mm (2.2950 ± 0.0004 inch)	42.418 ± 0.010 mm (1.6700 ± 0.0004 inch)
B	39.220 ± 0.006 mm (1.5441 ± 0.0002 inch)	51.948 ± 0.010 mm (2.0452 ± 0.0004 inch)	39.243 ± 0.010 mm (1.5450 ± 0.0004 inch)
C	38.095 ± 0.006 mm (1.4998 ± 0.0002 inch)	47.653 ± 0.008 mm (1.8761 ± 0.0003 inch)	38.118 ± 0.010 mm (1.5007 ± 0.0004 inch)
D	34.986 ± 0.006 mm (1.3774 ± 0.0002 inch)	42.007 ± 0.005 mm (1.6538 ± 0.0002 inch)	35.009 ± 0.010 mm (1.3783 ± 0.0004 inch)

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Table 3
Designed Clearance for Clutches
Clutch	Nominal	Minimum	Maximum
Clutch 1	4.04 mm (0.159 inch)	3.63 mm (0.143 inch)	4.47 mm (0.176 inch)
Clutch 2	2.03 mm (0.080 inch)	1.68 mm (0.066 inch)	2.36 mm (0.093 inch)
Clutch 3	3.12 mm (0.123 inch)	2.64 mm (0.104 inch)	3.61 mm (0.142 inch)
Clutch 4	3.12 mm (0.123 inch)	2.64 mm (0.104 inch)	3.61 mm (0.142 inch)
Clutch 5	2.03 mm (0.080 inch)	1.57 mm (0.062 inch)	2.46 mm (0.097 inch)
Clutch 6	4.11 mm (0.162 inch)	3.71 mm (0.146 inch)	4.52 mm (0.178 inch)