Bosch BDU280P Quick Start Guide

156 | DriveUnit DriveUnit | 157
Work steps
X Allenkeysize8
X Allenkeysize5
X Torquewrench
X SpidertoolforBDU3xx,
availablefromtheBosch
eBikeB2Bonlinestore
X Bearinggreaseandbrush
Tools
X Lockring: 30 Nm
Tightening torques
Installing Drive Unit (BDU310 /
350 / 365)
Fit the spider to the
Drive Unit
1. Mounttheleft-sidecrankarm.
Todothis,greasethebottom
bracketshaftandthentighten
crankboltM10x1.Usea
torquewrenchtotightenitas
speciedbythecrankmanu-
facturer
Makesurenottomix
uptheleftandright
cranks!Pedalscan
comelooseifassem-
bledincorrectly
2. Whenchangingthechainring:
Fitanewchainring
tothe
spider
using4chainring
screws
3. Presschainring alongwith
themountedspider
onto
thecleanedandlightlygreased
interlock
.Thespidermust
beonthesidefacingaway
fromthebike
Donotplaceany
spacers,sealsorspacer
ringsbetweenthemotor
andthespider/chain-
ring
4. SlidetheO-ring
onasfaras
thespider.OnlyuseO-ringsif
theyareintact
5. Greasethecleanedlockring
threadsandpushonthelock
ring
.Theletteringonthe
lockringmustbevisible
Thelockringhasa
left-handthread,so
tightenittotheleftwith
thespidertool.
Holditbackwiththe
leftcrank
6. Greasetheright-sidebottom
bracketshaftandmountthe
crankarmwiththecrankbolt
M10x1.Useatorquewrench
totightenitasspeciedbythe
crankmanufacturer
Removing Drive Unit
(BDU450 CX / 490P)
X Allenkeysize8
X Standardcrank-puller
X SpidertoolforBDU4xx,
availablefromtheBosch
eBikeB2Bonlinestore
Work steps Tools
Detach the spider from
the Drive Unit
1. Removethecrankarms
2. Blocktherearwheel,e.g.
securethebrakeleverwitha
cabletieorsimilar
3. UsetheSpidertooltounscrew
thelockring
Asithasaleft-hand
thread,turnittothe
right
4. Loosenthebrakeleveragain
5. Removethechain
6. RemovetheO-ring
and
carefullycheckitfordamage.
OnlyreuseO-ringsiftheyare
intact
7. Removethechainring
with
themountedspider
Retrot / replacement of
bearing protection ring
BDU4xx / 374y
X Assembly instructions:
bosch-ebike.net
→ Service → Technical
Information →Assembly
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Bosch BDU280P Specifications

General

Brand	Bosch
Model	BDU280P
Category	Bicycle Accessories
Language	English