Dover HEIL LIBERTY TP1L-SM-0520, Service Manual

Page: 86 / 136

Issued May 2020
Maintenance and Adjustment Copyright 2020, Heil Environmental
Printed in the U.S.A.
Maintenance and Adjustment
80
10 POINT AUTO LUBE
CAUTION
If one of the hydraulic hoses breaks, all the grease in the reservoir will drain. If one of the nylon lines break, only grease
stored in the individual injector will drain.
A. Operation
THE Heil Rapid Rail 10-Point Automatic Lube System is used to lubricate the packer mechanism. It is designed to
apply grease to each of the bearings for the packer each time the tailgate is raised. Hydraulic pressure of the tailgate
raise circuit is utilized to pressurize a 3” diameter cylinder under the front of the packer. The cylinder has welded end
caps and contains piston inside.
A small amount of oil pressurizes the cylinder each time the tailgate is raised and forces grease out the opposite end.
Grease leaving the cylinder flows through two hydraulic hoses connected to manifolds of injectors – six mounted on the
packer actuator plate to lubricate the linkage and two behind the left frame rail to lubricate the bearings at each end of
the packer shaft. Each injector takes approximately 800 PSI to open and stores about 0.15cc of grease for each pin.
The grease moves in each lube point through small nylon lines and a fitting to the pin surface.
It is important to inspect the system frequently. Without lubrication the pins and bearings will wear very quickly, such
that both pins and bearings will require replacement. The lubrication lines must be visually inspected daily to ensure they
are connected to every packer pin, and that every pin is being lubricated. Make sure the chassis engine is stopped
before adjusting or repairing any part of the lubrication or packer mechanism system. Broken hoses and fittings should
be replaced and the lubrication cylinder/reservoir filled as needed, every two or three weeks with normal use.
B. Packer System Grease
CAUTION
DO NOT attempt to use any other grease; to do so will cause the lube line to fail.
Double 00 and Triple 000 greases for Auto Lube Systems:
EP CONOLITH 000, CONOCO
LIDOK 000, EXXON
MOBILUX EP 023, MOBIL
OSSAGOL V 000, SHELL
UNOCAL MM GREASE LITHIUM 000, 76 UNOCAL
BIODEGRADABLE GREASE – SL WR AA1 000, SENTINEL