# Service bulletin MC1100116

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10151350
- Published by NHTSA: 2018\-12\-10
- Manufacturer's number: MC1100116
- Manufacturer's date: 2016\-05\-01
- NHTSA component: ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS; FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING

## NHTSA's summary

Coolant pump drain hose. Details The coolant pump is fitted with a radial shaft seal on the oil\-side and on the coolant\-side is a mechanical seal. Mechanical seals are reliable an durable, yet for technical reasons, they always exhibit minor seepage. The seepage amount is considered to be within permissible limits if the coolant does not need to be topped up between service intervals. The drain hole \(arrow in the figure\) of the coolant pump is in plain view. Even small, inevitable seepage is noticed and often perceived to be a faulty coolant pump. In many such cases, fault\-free coolant pumps are replaced. In order to reduce misdiagnosis and repeat repairs, a drain hose is retrofitted. The hose diverts the seepage away from the field of view to under the engine. Yet large amounts of leakage that indicate a faulty coolant pump will be noticed.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2016/MC-10151350-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2016/MC-10151350-0001.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine, Fuel system, Cooling system

## Vehicles listed

- BMW F650GS
- 2012 to 2019 BMW F700 GS
- 2008 to 2019 BMW F800 GS
- 2013 to 2017 BMW F800 GS ADVENTURE
- 2013 to 2017 BMW F800 GT
- 2013 to 2017 BMW F800 R
- 2008 BMW F800 S
- 2008 to 2010 BMW F800 ST
- 2006 to 2007 BMW F800S

## Other bulletins for the same vehicles and component

- [MC59934171](/bulletins/10149291.md), 2018-11-26, Service bulletin: ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:COOLING SYSTEM. Coolant pump WITH drainage line as of model year 2015 not yet included in the PDI system
- [TSB\-17\-001\-09](/bulletins/10029624.md), 2009-07-13, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS. BMW MOTORCYCLE: THE COOLANT INLET HOSE IS NOT COMPLIANT WITH THE APPLICABLE BMW SPECIFICATIONS. ENGINE OPERATION CAN CAUSE THE INLET HOSE TO WIDEN AND BECOME CORRESPONDINGLY SHORTER; OVERTIME THIS CONTRACTION IN LENGTH CAN CAUSE THE HOSE TO WORK BACK OFF THE WATER PUMP NOZZLE FOR ENOUGH TO ALLOW COOLANT TO ESCAPE. NO MODEL YEARS LISTED. \*PE

JSON: [/v1/bulletins/10151350](/v1/bulletins/10151350)

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