Alternator - Bosch - 1986A00746
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eBayAlternator without belt pulley 1 986 A00 746 BOSCH for MERCEDES-BENZ MAN DAF
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BOSCH 1 986 A00 746 Alternator for DAF,MAN,MERCEDES-BENZ,RENAULT TRUCKSFree delivery in 1–3 days£520.24Visit shop →
My Motor WorldBosch 1986A00746 Alternator (Alt28v80arl)
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Bosch 1986A00746 Alternator (Alt28v80arl)Free delivery in 1–3 days£379.99Visit shop →
Product Information
Full details
This Bosch Alternator (1986A00746) is designed for commercial vehicles needing a robust charging system with 28V voltage and 80A current. Its primary benefit is reliable power generation for essential vehicle electronics. A key consideration is that it is supplied without a belt pulley and does not include a vacuum pump, requiring separate purchase or transfer from the old unit. This guide covers its features, use, and maintenance.
All features
| Model Part Number | 1986A00746 |
|---|---|
| Brand | Bosch |
Extended Product Information
FAQs
What does 'supplied without a belt pulley' mean?
It means the alternator does not come with the pulley that the drive belt connects to. You will need to either transfer the pulley from your old alternator or purchase a new compatible pulley separately.
Is this alternator suitable for a gasoline engine?
This alternator is designed for specific commercial vehicles, including diesel models like the Mercedes-Benz T2/LN1 811 T2 4.0D. It's crucial to verify fitment based on your vehicle's specific requirements for voltage and amperage, not just the fuel type.
How do I know if I need to replace my alternator?
Common signs include a battery warning light on the dashboard, dimming headlights or interior lights, strange noises (whining, grinding), frequent battery failures, or electrical accessories malfunctioning.
What is the main difference between this and Bosch part number 1986A00182?
This part number (1986A00746) is a replacement or updated version of the 1986A00182, offering the same or improved specifications for compatible vehicles.
Can I use this if my vehicle has a vacuum pump?
This alternator is not equipped with a vacuum pump. If your vehicle requires an integrated vacuum pump on the alternator, this model will not be suitable without modification or an alternative solution.
What is the recommended additional repair when installing this alternator?
It is highly recommended to replace the V-Belt or V-Ribbed Belt at the same time, as it is often supplied without a pulley and the belt is subjected to wear.
Troubleshooting
Alternator not charging battery
Check belt tension and condition. Inspect wiring connections for corrosion or looseness. Verify voltage regulator is functioning correctly. Ensure the alternator itself is not internally faulty.
Whining or grinding noise from alternator
This could indicate worn bearings. Inspect the pulley for damage. The noise may worsen with engine RPM. Replacement of the alternator may be necessary.
Battery warning light is on
This is a common indicator of a charging system fault. Check connections, belt, and output voltage. The alternator may need to be tested or replaced.
Overcharging or undercharging
The voltage regulator may be faulty. Test the output voltage with a multimeter. Ensure the alternator is the correct amperage and voltage for the vehicle's system.
Pros and Cons
Pros
- Reliable power output for demanding applications.
- Designed as a direct replacement for specific Bosch part numbers.
- Robust construction suitable for commercial vehicle use.
- Ensures consistent charging of the vehicle's battery.
- Facilitates proper operation of onboard electronic systems.
Cons
- Supplied without a belt pulley, requiring additional purchase or transfer.
- Does not include a vacuum pump.
- Specific fitment requires careful verification using vehicle details.
- Installation may require specialized tools or mechanical knowledge.
Setup, Compatibility & Care
Setup: Installation involves mounting the alternator using its 3-point system and connecting the appropriate wiring. Ensure the correct belt is fitted and tensioned properly. The unit is supplied without a belt pulley and vacuum pump, so these components must be sourced separately or transferred from the old unit.
Compatibility: This alternator is designed for vehicles requiring a 28V, 80A output. It is a direct replacement for Bosch 1986A00182 and is cross-referenced with parts like 0 120 468 053 and F 032 CA1 035. Verified compatibility is with Mercedes-Benz T2/LN1 models, specifically the 811 T2 4.0D from 1994. Always use a vehicle fitment tool or consult a professional to confirm compatibility with your specific vehicle model.
Care: Regularly inspect the alternator for signs of wear, damage, or contamination. Keep the external surfaces clean, particularly around the ventilation slots, to ensure efficient cooling. Monitor belt tension and condition. A failing alternator can lead to battery issues and electrical problems, so address any unusual noises or charging faults promptly.