Description

The Warner T-10 is a fully synchronized four-speed transmission having a floor mounted shift lever. Lubricant capacity is 2 ¼ pints.

Disassembly of Transmission

1. Drain transmission, mount in stand remove side cover and shift controls.
2. Remove front bearing retainer and gasket.
3. Remove output shaft companion flange
4. Drive out lock pin and pull reverse shift shaft out about 1/8" to disengage shifter fork from gear.
5. Remove bolts and tap the case extension (with soft hammer) rearward. When idler gear shaft as far as it will go, move extension to the left so the reverse fork clears the reverse gear. Remove extension and gasket.
6. Remove rear bearing snap-ring from mainshaft.
7. Remove case extension oil seal.
8. Using a puller, remove speedometer drive gear.
9. Remove the reverse gear, reverse idler gear and tanged thrust washer.
10. Remove self-locking bolt holding rear bearing retainer to transmission case.
11. Remove the entire mainshaft assembly.
12. Unload bearing rollers from drive gear and remove 4th speed synchronizer blocking ring.
13. Lift the front half of reverse idler gear and its thrust washer from the case.
14. Remove the main drive gear snap-ring and spacer washer.
15. With soft hammer, tap main ear out of front bearing.
16. From inside the case, tap out front bearing and snap-ring.
17. From the front of the case, tap out the countershaft with a dummy shaft.
18. Then lift out the countergear assembly with both tanged washers.
19. Dismantle the countergear, consisting of 80 rollers, six .050 in. spacers and a roller tubular spacer.
20. Remove rnainshaft front snap- and slide third and fourth-speed clutch assembly, third-speed gear and synchronizer ring, second and third-speed thrust bearing, second-speed gear and second-speed synchronizer ring from front of mainshaft
21. Press mainshaft out of retainer.
22. Remove the mainshaft rear snap-ring
23. Support first and second-speed clutch assembly and press on rear of mainshaft to remove shaft from rear bearing, first- speed gear, and synchromesh ring, first and second-speed clutch sliding sleeve and first- speed gear bushing.

Assembly

Mainshaft

1. From the rear of the mainshaft, assemble first and second-speed clutch assembly to mainshaft (sliding clutch sleeve taper toward the rear, hub to the front) and press the first-speed gear bushing onto the shaft.
2. Install first speed gear synchronizing ring aligning notches in ring with keys in hub.
3. Install first-speed gear (hub toward front) and thrust washer with the washer grooves facing first-speed gear.
4. Press on the rear bearing, with the snap-ring groove toward the front of the transmission. Be sure the bearing is firmly seated against the shoulder on the mainshaft.
5. Install the selective fit snap-ring onto the mainshaft behind the rear bearing. Use the thickest ring that will fit between the rear face of the bearing and the front face of the snap-ring.
6. From the front of the main- shaft, install the second-speed gear synchronizing ring so that the ring notches correspond with the hub keys.
7. Install the second-speed gear (hub toward the back) and the second and third-speed gear thrust bearing.
8. Install third-speed gear (hub to front) and third-speed gear synchronizing ring (notches front).
9. Install third and fourth-speed gear clutch assembly (hub and sliding sleeve) with taper front, being sure keys in the hub corresponds with notches in third- speed gear synchronizing ring.
10. Install snap-ring (.086-088 in. thickness) into mainshaft groove in front of the third and fourth-speed clutch assembly.
11. Install rear bearing retainer plate. Spread the snap-ring on the plate to allow the snap-ring to drop around the rear bearing and press on the end of the mainshaft until the snap-ring engages the groove in the rear bearing.
12. Install reverse gear (shift collar to the rear).
13. Press speedometer drive gear onto the mainshaft so that there is a measurement of 41 in. from the center of the gear to the flat surface of the rear bearing retainer.
14. Install special snap-ring into the groove at the rear of the main- shaft.

Countergear

1. Install countergear dummy and tubular roller bearing spacer into the countergear.
2. Using heavy grease to hold the rollers, install 20 bearing rollers in either end of the countergear, two spacers, 20 more rollers, then one spacer. Install the same combination of rollers and spacers in the other end of the countergear.
3. Set the countergear assembly in the bottom of the transmission case making sure the tanged thrust washers are in their proper position.

Main Drive Gear

1. Press bearing (snap-ring groove front) onto main drive gear until the bearing fully seats against the shoulder on the gear.
2. Install spacer washer and selective fit snap-ring in the groove in the main drive gear shaft.
NOTE: Variable thickness snap- rings are available to obtain a prescribed clearance of .000-.005 in. between the rear face of the snap-ring and the front face of the spacer washer.

Assembly of Transmission

1. Install main drive gear and bearing assembly through the side cover opening and into position in the transmission front bore. After assembly is in place, install front bearing snap-ring.
2. Lift countergear and thrust washers into place. Install Woodruff key into end of countershaft, then from the rear of the case, press the countershaft in until flush with rear of case and the dummy shaft is displaced. Maximum countergear end play is .025 in.
3. Install the 14 bearing rollers into the grease-coated end of the main drive gear.
4. Using heavy grease, position gasket on front face of rear bearing retainer. Install the fourth-speed synchronizing ring onto main drive gear with clutch key notches toward rear of transmission.
5. Position the reverse idler gear thrust washer on the machined face of the ear cast in the case for the reverse idler shaft. Position the front reverse idler gear on top of the thrust washer, hub facing toward rear of case.
6. Lower the mainshaft assembly into the case, with the forth-speed synchronizing ring notches aligning with the keys in the clutch assembly
7. Install self-locking bolt, attach the rear bearing retainer to the transmission case and torque the bolt to 20-30 ft. lbs.
8. From the rear of the case, insert the rear reverse idler gear, engaging the spines with the portion of the gear within the case.
9. Place a greased gasket on the rear face of the rear bearing retainer.
10. Install remaining tanged thrust washers into place on reveries idler shaft, being sure the tang on the thrust washer is in the notch in the idler thrush face of the extension.
11. Place the two clutches in neutral position.
12. Pull reverse shifter shaft to left side of extension and rotate shaft to bring reverse fork to extreme forward position in the extension. Align forward and reverse idler gears.
13.Poisition the extension onto the transmission case by uniting the reverse idler shaft with the idler gears and engaging the shift fork with the reverse shift collar by turning the shifter shaft, the reverse gear will move rearward thus enabling installation of the extension.
14. Install three extension and retainer to case attaching bolts at 35-45 ft. lbs. and two extension ro retainer attaching bolts (20-30 ft. lbs.). Use sealer on the lower right bolt.
15. Align groove in reverse shift shaft with hole in boss and drive in lock pin
16. Install the main drive gear bearing retainer and gasket aligning the oil well with the outlet hole and torque the sealer-coated bolts to 15-20 ft. lbs.
17. Install both shift forks into each clutch sleeve.
18. With both clutches in neutral, install side cover and gasket and torque to 10-20 ft. lbs. Use sealer on the lower right bolt.
19. Install first and second, and third and fourth shift leavers.

Torque Chart