Pre-Run Inspection/Spares

Prepared by Jeff Sub – Owner of MIT Drivetrain Specialists

Typical spare parts list:
路聽聽聽聽聽聽聽聽 Driveshaft u-joint
路聽聽聽聽聽聽聽聽 Driveshaft hardware
路聽聽聽聽聽聽聽聽 Axle u-joint
路聽聽聽聽聽聽聽聽 Locking hub (if applicable)
路聽聽聽聽聽聽聽聽 Engine belts & hoses
路聽聽聽聽聽聽聽聽 Fluids
路聽聽聽聽聽聽聽聽 Electrical kit: wire, crimps, fuses, tape & zip ties
路聽聽聽聽聽聽聽聽 Tire plug kit (ARB makes a nice one)
路聽聽聽聽聽聽聽聽 Misc. suspension bolts ie: trac bar bolt & control arm bolt
路聽聽聽聽聽聽聽聽 H.D. ratchet straps

Pre-run visual inspection all vehicles check:
路聽聽聽聽聽聽聽聽 fluid leaks
路聽聽聽聽聽聽聽聽 engine & transmission mounts for聽 cracks in rubber
路聽聽聽聽聽聽聽聽 belts & hoses including rubber fuel lines along frame rails & brake hoses for pinching & abrasion from contact with suspension or tires
路聽聽聽聽聽聽聽聽 play/slop in u-joint or output yokes
路聽聽聽聽聽聽聽聽 wiring or hoses run too close to heat sources on moving parts
路聽聽聽聽聽聽聽聽 with aftermarket steering linkage check for loose jam nuts
路聽聽聽聽聽聽聽聽 play @ wheel bearings
路聽聽聽聽聽聽聽聽 shocks & steering stabilizer for damage or leaks

CJ/YJ additional pre-run inspection check:
路聽聽聽聽聽聽聽聽 frame cracks, especially at suspension mounts, engine mounts, steering box & welds
路聽聽聽聽聽聽聽聽 torque on all spring hangers, shackle bolts, u-bolts, steering box bolts and pitman arm nut
路聽聽聽聽聽聽聽聽 leaf springs for cracks & bushing condition
路聽聽聽聽聽聽聽聽 CJ 76-86 common failure is crack at front & rear shackle hangers where they bolt to the frame
路聽聽聽聽聽聽聽聽 YJ 87-95 common failure crack at front shackle hangers where they are welded to the frame

TJ, XJ, ZJ, WJ, JK additional pre-run inspection check:
路聽聽聽聽聽聽聽聽 Torque on all control arm bolts, trac bar bolts, & jam nuts on adjustable versions
路聽聽聽聽聽聽聽聽 Bushings & pivot joints
路聽聽聽聽聽聽聽聽 Cracks where suspension mounts weld to frame and to axle tubes
路聽聽聽聽聽聽聽聽 Vehicles with sway bar disconnects check all components as they are generally prone to failure.聽 Their design makes them weaker than the factory parts they replace
路聽聽聽聽聽聽聽聽 97-06 TJ鈥檚 common failure is rear upper control arm/track bar mount will crack at welds to top of the LH axle tube.聽 These brackets are under increased stress because of the leverage added by extension brackets that are common to most lifts.聽 (we add a gusset to prevent this)
路聽聽聽聽聽聽聽聽 TJ, XJ, ZJ, WY common failure is control arm mounts bending or cracking where welded to front axle housing.聽 The best fix is to replace with HD aftermarket brackets.

Annual vehicle inspection & preventative maintenance should include:
路聽聽聽聽聽聽聽聽 Oil level of transfer case, transmission, front & rear differentials
路聽聽聽聽聽聽聽聽 Steering linkage for play in tie rod ends
路聽聽聽聽聽聽聽聽 Tie rod & drag link ends check torque & replace cotter pins
路聽聽聽聽聽聽聽聽 Grease zerks & spray lube heim joints with penetrating oil
路聽聽聽聽聽聽聽聽 Ball joints for wear
路聽聽聽聽聽聽聽聽 Brake condition & flush fluid
路聽聽聽聽聽聽聽聽 Hydraulic clutch system for leaks (master cylinder will leak on the inside of firewall above pedals)
路聽聽聽聽聽聽聽聽 Lug nut torque & tire condition including the age of the tires.聽 Tires have a finite lifespan regardless of mileage.聽 Discount Tire has an informative web site to help you determine condition and age usefulness of your tire.聽 This is especially important on 鈥渕ostly鈥 trail rigs, motor homes, trucks & trailers that don鈥檛 see many miles each year.聽 From personal experience a tire can look perfectly good on the outside but will be coming apart internally.聽 When is fails @ freeway speed it can be your worst nightmare, for you and your vehicle.聽 This is just as important for spare tires too!

If you have any questions on parts needed stop by and we can get you numbers based on your specific application.聽 We also offer driveline checkups and annual inspections.

[su_highlight]M.I.T. Drivetrain Specialists
1112 Pioneer Way
El Cajon 92020
619.579.7727
Jeffrey & Karen Sugg – Owners[/su_highlight]