Multiquip ST-45HRM CE ST-45HRMCE CONCRETE PUMP— BRAKING SYSTEM, Overrun Lever, Nipples Bellows

ST-45HRM CE CONCRETE PUMP— BRAKING SYSTEM

6.0OVERRUN COUPLING ASSEMBLY

The coupling is greased on assembly, but will require periodic maintenance to ensure a smooth operation of the braking system.

Re-grease the shaft bearings via the grease nipples (Figure 46), provided at 9,656 km (6,000 miles) or 6-month intervals. Also ensure correct functioning of all pivots, levers, ratchets and the spring store assembly. Grease all points of movement.

Nipples

Bellows

Figure 46. Meredith & Eyre Coupling with Bellows and Shaft Nipples

The hydraulic damper (Figure 47) is sealed and maintenance free but its operation should be checked if braking problems occur.If the damper is to be removed, enclose it in a strong cloth and do not stand directly in line as the damper contains oil and gas under high pressure.

To remove, release the 2 bolts at either end. The damper will need to be slightly pre-compressed to be fitted.This is normal, and ensures that the braking system works efficiently and that the trailer is towed on the drawtube, not on the damper as this would lead to premature failure.

Meredith & Eyre Couplings do not require for

NOTE the towing ball head or eye to be removed or loosened when replacing

Meredith & Eyre Couplings do not require for the towing ball head or eye to be removed or loosened when replacing a damper

Knott Couplings have the damper attached to the rear bolt of the towing head.These dampers in these couplings require a larger amount of pre-compression when being fitted, so remove the cast L. shaped bracket, which attaches the damper to the rear of the couplings body and reassembly, this onto the new damper before assembly onto the coupling body.

7.0STUB AXLE / BRAKE BACK PLATE

A number of Meredith & Eyre axles feature a removable stub axle, as shown in Figure 48.This design is unique to Meredith & Eyre and illustrated our desire to keep replacement costs as low as possible.

The large slotted nut on the back of the arm is torqued to 230Nm (170 lbf.ft). Removing this nut will allow the stub axle to be removed. When refitting, if the split pin cannot be fitted after torque setting the slotted nut, tighten the nut further until the next available hole is accessible

Damper

Overrun Lever

Figure 47. Meredith & Eyre Coupling with Damper and Overrun Output Lever

Figure 48. Meredith & Eyre Axle with

Removal Stub Axle

The removal of this assembly is only necessary when the stub ale or brake back plate is to be replaced (e.g.: After an accident.) Make a note of how these parts are fitted and the position of thecable holder.

All other brakedrum components are accessed from the front via thegrease cap.

All other axles have a welded stub axle and brake back plate assembly, which cannot be replaced. In the event of damage to a stub axle, it is likely that the whole axle will need to be replaced.

MAYCO ST-45HRM CE PUMP — OPERATION & PARTS MANUAL — REV. #0 (02/23/04) — PAGE 47