LEVER-SPRING SEAT 2W6102 - Caterpillar

Illustration 1 g00697657
Side view of the 50-MT series
(1) Nut (battery terminal)
(2) Screw (terminal assembly)
(3) Bolts (solenoid mounting)
(4) Pinion
(5) Bolts (rear frame)
(6) Screw (field winding) (brush lead)
(7) Commutator
(8) Brushes
(9) Laminated core
(10) Screws (field winding)
(11) Bolts (shift lever housing)
(12) Screw (pinion drive housing)
Illustration 2 g00697684
Front view of the solenoid for a 50 MT series
(1) Nut (battery terminal)
(2) Screw (terminal assembly)
(13) Nuts (terminal)
Table 1
50-MT Complete Starting Motor Specifications
Rated Voltage 24V 32V 64V
Solenoid Winding
Pull-In Resistance .43 to .56 Ω 1.2 to1.43 Ω 3.56 to 3.97 Ω
Hold-In Resistance 2.9 min Ω 5.3 to 7.0 Ω 17.1 to 18.9 Ω
Pull-In Current 9.0 to 11.5 Amp at 5 V 7.0 to 8.3 Amp at 10 V 7.0 to 8.3 Amp at 10 V
Hold-In Current 6.8 Amp max at 20 V 4.0 to 5.3 Amp at 28 V 4.0 to 5.3 Amp at 28 V
No Load Test
Voltage 20V 30V 32V
Current (max) 120 Amp 125 Amp 90 Amp
Speed (min) 5500 rpm 7500 rpm 5500 rpm
Load Test
Voltage 18V 24V NA
Current (max) 750 Amp 700 Amp NA
Speed (min) 1200 rpm 1100 rpm NA
Commutator (7)
Diameter 58.7 to 58.9 mm (2.34 to 2.32 inch) 58.7 to 58.9 mm (2.34 to 2.32 inch) 58.7 to 58.9 mm (2.34 to 2.32 inch)
Diameter (min) 56.7 mm (2.23 inch) 56.7 mm (2.23 inch) 56.7 mm (2.23 inch)
Depth Of Insulation Between Commutator Bars (min) 0.64 mm (.025 inch) 0.64 mm (.025 inch) 0.64 mm (.025 inch)
Brush (8)
Length 19.1 to 19.8 mm (.75 to .78 inch) 19.1 to 19.8 mm (.75 to .78 inch) 19.1 to 19.8 mm (.75 to .78 inch)
Length (min) 10 mm (.4 inch) 10 mm (.4 inch) 10 mm (.4 inch)
Pinion Clearance (4) 9.1 0.8 mm (0.36 0.03 inch) 9.1 0.8 mm (0.36 0.03 inch) 9.1 0.8 mm (0.36 0.03 inch)
Maximum Total Indicator Runout (TIR)
Commutator (7) 0.13 mm (.005 inch) 0.13 mm (.005 inch) 0.13 mm (.005 inch)
Laminated Core (9) 0.13 mm (.005 inch) 0.13 mm (.005 inch) 0.13 mm (.005 inch)
Torques
Terminal Nuts (1) 30.5 3 N m (22.5 2.2 lb ft) 30.5 3 N m (22.5 2.2 lb ft) 30.5 3 N m (22.5 2.2 lb ft)
Terminal Nuts (13) 2.25 .25 N m (20 2