How to Align the Markings on a Mitsubishi Pajero Driveshaft?
3 Answers
There are no markings on the Mitsubishi Pajero driveshaft. The driveshaft is a crucial component in the vehicle's drivetrain that transmits power. Its function is to work together with the transmission and drive axle to transfer the engine's power to the wheels, generating driving force for the vehicle. The driveshaft is a high-speed, minimally supported rotating body, making its dynamic balance critically important. Typically, driveshafts undergo dynamic balance testing and adjustments on a balancing machine before leaving the factory. Below is a classification of driveshaft types: 1. Rigid Universal Joint: Transmits power through hinge-like connections of components; 2. Flexible Universal Joint: Transmits power through elastic components and provides cushioning and vibration damping; 3. Constant Velocity (CV) Joint: A universal joint where the angular velocity of the driving and driven shafts remains equal even when the angle between the two shafts changes, known as a constant velocity joint or CV joint. These are primarily used in wheel drive systems of steering drive axles and independent suspension drive axles, mainly for power transmission in passenger cars; 4. Non-Constant Velocity Joint: A universal joint where the angular velocity of the driving and driven shafts is not equal when the angle between the two shafts changes, known as a non-constant velocity joint or cross-type universal joint.
I remember doing this a few times when working on my own car. Marking the driveshaft is to prevent vibration upon reinstallation. For the Pajero, you need to mark the rear drive shaft flange before removal. First, secure the chassis and jack up the rear wheels to ensure safety. Then, clean the contact surface of the flange to avoid dust interference. Use a small center punch or a colored marker to make two symmetrical dots or draw a line at the mating point of the flange and axle. The key is to make the marks clear and permanent—otherwise, misalignment during installation can cause shaking or unusual noises while driving. The Pajero's 4WD system is quite particular about balance, so marking ensures proper alignment. Taking a photo before disassembly is also a good idea to avoid forgetting details. When reinstalling, align the marks and tighten gently. The whole process shouldn’t take more than 30 minutes. If the U-joint is involved, check its lubrication and replace it if worn. Personally, I think taking this extra step for older cars saves hassle and prevents costly repairs later.
As an enthusiast who often helps friends with car repairs, I'm very familiar with the driveshaft marking procedure for the Pajero. The purpose of marking is to align the flange and prevent imbalance. First, prepare the tools: cleaning cloth, center punch or oil-based marker, and a phone for taking photos. After parking and securing the handbrake, stabilize the rear axle to prevent any sliding hazards. Locate the flange at the end of the driveshaft, clean off any dust or rust, and make three clear marks at 120-degree intervals on the edge and bearing mating points. Take photos with your phone for reference during reinstallation. The Pajero's axle structure isn't overly complex, but frequent off-roading can cause loosening—marking ensures proper realignment. After installation, start the engine to test; if there's slight vibration, the marks may be misaligned and need redoing. Related maintenance includes regular lubrication of the U-joint to extend its lifespan. I consider this a beginner-level DIY job, taking about 30 minutes to complete, saving shop costs—just requires a bit of attention to detail.
