HP LaserJet 5 -- Delivery Assembly Overhaul

The upper delivery roller is a weak point -- it tends to glaze and lose traction leading to 'accordian' jams in the back of the printer. Replace both rollers when overhauling an assembly.

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Lower Roller P/N RF5-1077.

Upper Roller P/N RF5-1076.

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1) Upper Black Guide^[1]
- Two claws at the rear corners.
- The front of the guide hooks onto the upper roller's bearing sleeves. Pry gently to free it.

2) Timing Belt
- Slip it off the lower roller's pulley.

3) Lower Roller; Pinch Rollers; Springs
- One e-clip.
- One 5mm bore nylon bearing.
- Slip the roller's bronze bearing out of place to free the roller.
- Four pinch rollers.^[2]
- Four pinch roller springs.

4) Upper Roller^[1]
- One e-clip.
- One 6mm bore nylon bearing.
- Slip the roller's bronze bearing out of place to free the roller.

5) Belt/Pulley Assembly
- One extension spring.
- Lift the tab at the end of the pulley toggle to allow the toggle to turn fully CCW. The entire bracket w/pulley toggle and belt will be free to come away.
- NOTE the small rectangular opening in the lower end of the bracket. At reinstallation, that opening must first go over a mating projection on the plastic body of the unit.

6) Wash and dry (with compressed air) the body, the upper black guide and the belt/pulley assembly.

7) Clean the bores of the two nylon bearings w/methyl hydrate.

8) Lubricate the two pulley spindles sparingly with WD-40.

9) Reassemble with new upper and lower rollers.

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Note [1]: The upper roller has four litle 'riders' on it. They're there to ensure that the trailing edge of an exiting sheet of paper falls away immediately as it exits. When reinstalling the upper black guide, take care to ensure that the riders all point forward as the guide is snapped into place.

Note [2]: The pinch rollers tend to accumulate toner and grime, but it has no ill effect. We don't bother cleaning them.

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