Service Manual

ProCore 864/1298Page 4 − 22Coring Head

2. Apply antiseize lubricant liberally to crankarm

splines and journals.

3. Install crankarms into bearing housing. Make sure

that correct identification number on crankarm is aligned

with timing mark on bearing housing (Fig. 19).

4. Install cap screw (item 1) and flat washer (item 2) to

retain crankarms. Do not fully tighten cap screw.

5. Drive new spring pins (item 11) into coring head

frame holes.

6. Position bearing housing assembly to coring head

frame.

7. Secure bearing housing to frame with four (4) cap

screws, eight (8) hardened washers and four (4) lock

nuts. Torque fasteners from 70 to 80 ft−lb (95 to 108

N−m).

8. Install stomper arms and couplings to crankarms on

both sides of bearing housing (see Stomper Arm Instal-

lation in this section). Do not fully tighten fasteners.

9. Make sure that when #1 crankarm (at pulley) is

aligned with cast mark on bearing housing, all subse-

quent crankarm cast timing numbers are in numerical

order (Fig. 19).

10.Once all stomper arm and crankarm components

have been installed, fully tighten fasteners in the follow-

ing order (Fig. 21). Tighten fasteners to the torque speci-

fications identified in Figures 17 and 20:

A. Cap screw used to secure crankarms.

B. Cap screws that secure top of stomper arms.

C. Cap screws that secure coupling plates (Fig. 20).

D. Lock nuts that secure rotolink dampers to frame

(see Rotolink Damper Installation in this section).

11.After assembly, rotate coring crankshaft by hand to

make sure that no binding occurs.

12.If removed, install coring head drive belt (see Coring

Head Drive Belt Installation in this section).

13.Install rear hood.

1. Crankarm screw

2. Stomper arm screw

3. Coupling plate screw

4. Damper lock nut

Figure 21