(BRAKE LINING) 2Y6884 - Caterpillar

Performance Checks
Illustration 1 g01269199
Typical example
(1) Automatic lubrication pump (785G uses 2 pumps)
(2) Primary lubrication distribution valve as
(3) Cycle indicator pin
(4) Hose
(5) Secondary lubrication distribution valve assemblies
(6) Bearing
Illustration 2 g01266806
Automatic lubrication pump
(7) Lubricant reservoir
(8) Pump element as
(9) Pressure relief valve
Illustration 3 g01267323
Fault indicator for the pressure relief valve
(8) Pump element as
(9) Pressure relief valve
(9A) Fault indicator pin
Illustration 4 g01271291
Exploded view of the automatic lubrication pump
(8) Pump element as
(9) Pressure relief valve
(10) Eccentric shaft
(11) Autolube pump motor
Illustration 5 g01271292
Pump element as during suction phase
(10) Eccentric shaft
(A) InletProblem: The automatic lubrication pump does not operate.
Probable Cause
Automatic lubrication pump (1) is not receiving voltage.
Eccentric shaft (10) of autolube pump motor (11) is blocked.Problem: The autolube pump motor runs, but discharges no grease.
Probable Cause
There is an air pocket at inlet (A) for pump element as (8).
Inlet (A) for pump element as (8) is blocked with a contaminant.Problem: The fault indicator pin of the pressure relief valve indexes allowing grease to discharge at the pressure relief valve.
Probable Cause
There is a blockage in one of the lubrication distribution valve assemblies.
There is a blockage in one of the hoses.
There is a blockage in one of the connected components.Problem: The cycle indicator pin of the primary lubrication distribution valve as does not move.
Probable Cause
There is a blockage in one of the lubrication distribution valve assemblies.
There is a blockage in one of the hoses.
There is a blockage in one of the connected components.Problem: The cycle indicator pin of one of the secondary lubrication distribution valve assemblies does not move.
Probable Cause
There is a blockage in that particular lubrication distribution valve as.
There is a blockage in one of the hoses.
There is a blockage in one of the connected components.Problem: The bearing does not receive any grease.
Probable Cause
Lubricant reservoir (7) is empty.
A hose has been cut.
A hose has chafed so much that a leak developed.