Propeller Shaft Replacement (Rear Drive) - GMC G Service Manual

PROPELLER SHAFT
REPLACEMENT (REAR DRIVE)
H Remove or Disconnect (Figure 2)
• Raise the vehicle on a hoist.
1. Skid plate (if equipped).
• Reference mark the propeller shaft (4) to pinion
flange (7) connection.
• Support the propeller shaft (4).
2. Bolts (5). J 33051 may be used (if necessary).
3. Retainers (6).
4. Yoke and universal joint assembly (8).
] Important
• Do not pound on the original propeller shaft
yoke ears. The plastic injection joints may frac­
ture. Never pry or place any tool between a
yoke and a universal joint.
• Tape bearing cups onto yoke and universal joint
to prevent the loss of bearing rollers.
5. Propeller shaft (4).
• Slide the propeller shaft (4) forward.
• Lower the propeller shaft (4) and withdraw
under the rear axle.
• Do not allow the universal joint to incline greatly;
the joint may fracture.
Models with a two-piece propeller shaft
• Support the front propeller shaft (3).
6. Nuts (13).
7. Bolts (16) and washers (15).
8. Center bearing support (2).
9. Cap (10).
10. Washer (11).
11. Seal (12).
12. Front propeller shaft (3).
• Do not allow the universal joint to bend deeply
as the universal joint could fracture.
Clean
• All parts.
Inspect
1. Outer diameter of transmission yoke (14) for burrs.
Any burring will damage the transmission seal.
2. For proper installation and uniform seating of bearing
cups.
3. Slip yoke (18) splines for wear.
4. For twisted slip yoke splines or possibly the wrong
universal joint.
PROPELLER SHAFT 4A-7
H Install or Connect (Figures 2, 6 and 7)
One-Piece Propeller Shaft
1. Propeller shaft (4) into the transmission.
• Lubricate slip joint.
2. Yoke and universal joint assembly (8) onto the pinion
flange (7).
• Align the reference marks on the pinion flange
(7) and the propeller shaft rear yoke. Seat the
yoke properly.
3. Retainer (6).
NOTICE: See " Notice" on page 4A-1 of this
section.
4. Bolts (5). J 33051 may be used (if necessary).
HO
Tighten
• Bolts (5) to "Specifications" at the end of this
section.
Two-Piece Propeller Shaft
1. Propeller shaft (3) into the transmission.
• Bottom the propeller shaft (3) yoke in the
transmission.
• Lubricate slip joint.
2. Center bearing support (2) onto hanger (1).
• Align the center bearing support 90 degrees to
the front and rear propeller shaft (3 and 4) cen­
ter lines. Refer to figure 7.
3. Bolts (16).
4. Washers (15).
5. Nuts (13).
HQ
Tighten
• Nut (13) to "Specifications" at the end of this
section. Maintain alignment (figure 7).
I ! | Important
• Set the transmission yoke (14) ears in a vertical
position for proper phasing (figure 7).
6. Seal (12).
7. Washer (11).
8. Cap (10).
• Locate the bridged tooth on the splined shaft
9
( )-
9. Slip yoke (18) onto the splined shaft (9).
• Mate the missing tooth in the yoke (18) with the
bridged tooth on the splined shaft (9) (figure 7).
• Be sure the slip yoke (18) ears are horizontal
(figure 7).