Gasboy 580 - Manual (Page 25)

Maintenance and Troubleshooting
03/07/03 5-5
METER-REGISTER DISASSEMBLY
The B size measuring chamber can be removed for cleaning by taking out four meter body
screws, lifting off register assembly and removing three measuring chamber screws.
After separating and cleaning top and bottom half, reassemble, making sure baffle is seated in
grooves in top and bottom halves and through slot in measuring disc. Do not drop or sharply
strike chamber parts while handling. Rotate disc to make sure it turns freely and replace in meter
body. Do not overtighten screws. A torque of 20-25 ft-lbs is sufficient. When reassembling
register to meter body, use a new O-ring.
4860 4-WHEEL REGISTER SERVICE
NOTE: Numbers in parentheses correspond to the numbers shown on the parts illustration
and parts list in Section 6 labeled 4860 4-Wheel Register.
Replacing Bearing and Seal Assembly (Item 26)
To replace the bearing and shaft seal assembly (26), or service the gear train on back of register
housing (18), remove housing from meter by taking out four screws. NOTE: The meter housing
will be full of liquid so some means should be available to catch what drains from the case and
lines. To remove gears (22-25), remove three retaining rings (20) and drive key (21). Withdraw
the drive shaft and gear (14), spacer (15), and all parts of bearing and seal assembly (26).
Remove the nylon washer from item 26 and note its location. Remove both oilite bearings and
both O-rings from bore in register housing. Using new parts, which consist of a new nylon washer,
2 oilite bearings, and 2 O-rings, reassembly parts in reverse order. Be sure to lubricate both O-
rings with an O-ring lubricant before assembling.
Reassemble gear train in following sequence: gear (25), key (21), cluster gear (24), retaining ring
(20), control block (22), and retaining ring (20).