MEGA Corp. MHT175-CAT777-INSP-RSP-5 - Manual (Page 8)

2-1
MHT175-CAT777(G)-5
4 Feb 2014
SECTION 2
Scheduled Maintenance Inspections
Contents
DESCRIPTION
This section establishes scheduled maintenance inspections of the MHT175 trailer (MHT) and associated sys-
tems at the designated frequencies. Performing these inspections will identify potential system discrepancies
and allow preventative maintenance to be performed before a component or system is rendered totally inop-
erative. Once again, these inspections are in addition to and do not replace existing CAT scheduled inspection
requirements.
FREQUENCY
STEP
SUSPENSION & BRAKE SYSTEM WEEKLY
(150 HRS)
BI‐WEEKLY
(250 HRS)
MONTHLY
(500 HRS)
QUARTERLY
(1000 HRS)
SEMI‐ANNUAL
(2500 HRS)
ANNUALLY
(5000 HRS)
1
Check trailer axle and wheel group components as
defined in CAT 777F Service Manual. Service individual
components as required.
2
After initial installation or and system component
replacement, follow chassis required initial
maintenance schedule for that component or system.
Service as required.
3
Check trailer axle struts, a‐frame and pan‐hard rod for
security, damage and evidence of lubrication. Inspect
lubrication lines for damage and security.
X
4
Check rear axle housing and access plate for damage
security and leaks. Inspect axle sump breathers for
evidence of oil leakage.
X
5
Inspect axle final drives for proper fluid level. If more
than 3 Quarts (2.84 liters) are added at any inspection,
remove axle inspection cover to check spindle vent
cover plates security and signs of leakage. Repair as
required.
X
6
MHT rear bogie brake cooling filter assemblies and
manifolds for leaks, damage and security.
X
7 Replace MHT rear axle brake cooling oil filters.
X
8
MHT rear bogie brake accumulators and relay for
damage, security and leaks.
X
9
All brake system cooling and activation hoses for
damage, security and leaks. Ensure the tractor
integration points are also inspected (e.g. junction
manifolds, scavenge pump, tank, E‐brake, proportional
group, accumulators, oil cooler union…).
X
10
MHT bolster (side wall tunnels containing hydraulic
hoses) cavity drain holes for evidence of leaking.
X
11 Tractor brake relay for damage, security and leaks.
X
Description .........................................................................2-1
Suspension & Brake System .........................................2-1
Door System.......................................................................2-2 Electrical System ..............................................................2-2
MHT Structure & Hitch Assembly...............................2-2