Manual Bosch GSN 90-34 DK Professional (page 15 of 160) (English, German, Dutch, Danish, French, Italian, Polish, Portuguese, Swedish, Turkish, Spanish, Norwegian, Finnish)

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Bosch Power Tools 1 609 92A 10Z | (10.11.14)

English | 15

– Refill the magazine.

(See “Loading the Magazine”, page 14)

– Test the new driving depth on a test workpiece.

Repeat the worksteps as required.

Clearing Jams (see figures F1–F3)

Single nails can become jammed in the shot duct. If this

should occur frequently, please contact an authorised ser-

vice agent for Bosch power tools.

–Empty the magazine 8.

(See “Emptying the Magazine”, page 14)

– Open the magazine lock 15.

– Pull the magazine 8 away from the housing until it slips

off of lock pin 16.

This makes the jammed nail in the shot duct accessible.

– Remove the jammed nail. For this, us a pair of pliers, if

required.

– When driver blade 17 is extended, push it back into the

piston using a lubricated screwdriver or other suitable

lubricated object.

– Lubricate the shot duct with 2–3 drops of engine oil

(SAE 10 or SAE 20).

– Reinsert the magazine 8 again:

Open the magazine lock 15, if required. Guide lock pin

16 into the opening of magazine holder 18. Align the

magazine to magazine retainers 19 and push the maga-

zine completely to the front. Lock the magazine by com-

pletely folding magazine lock 15 up.

– Refill the magazine.

(See “Loading the Magazine”, page 14)

Changing a Magazine Rail (see figure G)

The magazine rails 20 can wear after prolonged use of the

pneumatic tool.

Replace defective magazine rails.

–Empty the magazine 8.

(See “Emptying the Magazine”, page 14)

– Loosen locking screw 21 (3 mm) with the supplied hex

key.

–Pull cover lid 22 out of the magazine 8.

– Allow the defective magazine rails 20 to slide out of the

magazine.

– Insert new magazine rails into the magazine.

– Insert cover lid 22 back into the magazine and tighten

locking screw 21.

Changing the Workpiece Protector (see figure H)

The workpiece protector 1 at the end of the discharge lock-

off 2 protects the workpiece until the pneumatic tool is cor-

rectly placed for the driving procedure.

The workpiece protector can be removed and replaced.

– Remove spring clip 23 and pull the workpiece protector

from the discharge lock-off 2.

– Push the new workpiece protector over the discharge

lock-off and mount the spring clip again.

Stationary Use of the Pneumatic Tool (see figure I)

For stationary use, the pneumatic tool can be fastened to a

balancer.

The screwable eyelet 24 is required for this.

– Remove the rear screw of the exhaust cap with the sup-

plied hex key.

– Screw the eyelet 24 firmly into the exhaust cap.

– Hook the eyelet to the balancer hook.

Transport and Storage

For transport, disconnect the pneumatic tool from the air

supply; especially when using ladders or moving in an unu-

sual stance or posture.

At the workplace, carry the pneumatic tool only by the han-

dle 5 and with the trigger 10 released.

Always store the pneumatic tool disconnected from the air

supply and at a clean and dry location.

When not using the pneumatic tool for a longer period of

time, cover steel parts with a fine oil coating. This prevents

the formation of rust.

Maintenance and Service

Maintenance and Cleaning

Disconnect the air supply before making

any adjustments, changing accessories,

or placing the pneumatic tool aside. This

safety measure prevents accidental start-

ing of the pneumatic tool.

 Have maintenance and repair work carried out only

through qualified persons. This will ensure that the

safety of the pneumatic tool is maintained.

An authorized Bosch after-sales service agent will carry out

this work quickly and reliably.

Lubricating the Pneumatic Tool (see figure J)

When the pneumatic tool is not connected to a mainte-

nance unit, it must be lubricated at regular intervals:

–For light-duty use 1x per day.

–For heavy-duty use 2x per day.

Apply 2–3 drops of lubricant into air connector 6. Do not

apply too much lubricant, which could then accumulate in

the pneumatic tool and be emitted via air outlet 4.

Use only the lubricants recommended by Bosch.

– SAE 10 mineral engine oil (for use at very cold ambient

conditions)

– SAE 20 mineral engine oil

 Observe all applicable environmental regulations

when disposing of old grease and solvents.

Maintenance Schedule

Always keep air outlet 4, discharge lock-off 2 and trigger

10 clean and free of foreign material (dust, chips, sand,

etc).

Clean the magazine 8. Remove any plastic or wood chips

that may accumulate in the magazine during operation.

Clean the pneumatic tool in regular intervals using com-

pressed air.

Correction of Malfunctions

Measure Explanation Action

Draining the exhaust filter daily.

Prevents the accumulation of dirt/ debris and moisture in the

pneumatic tool.

– Open the drain valve.

Keeping the lubricator filled at all times.

Ensures the lubrication of the pneumatic tool. – Fill lubricator with the recommended lubricants.

(See “Lubricating the Pneumatic Tool”, page 15)

Cleaning the magazine 8 and magazine slider 7. Prevents the jamming of nails. – Blow out the mechanism of the magazine/magazine

slider daily with compressed air.

Ensuring that the discharge lock-off 2 functions properly.

Promotes your work safety and efficient usage of the pneumat-

ic tool.

– Blow out the mechanism of the discharge lock-off daily

with compressed air.

Lubricating the pneumatic tool.

Reduces the wear of the pneumatic tool. – Apply 2–3 drops of lubricant into air connector 6.

(See “Lubricating the Pneumatic Tool”, page 15)

Draining the compressor. Prevents the accumulation of dirt/ debris and moisture in the

pneumatic tool.

– Open the drain valve of the compressor tank.

Problem Cause Corrective Measure

The pneumatic tool is ready for operation but no nails are dis-

charged.

A nail is jammed in the shot duct. – Clear the jam.

(See “Clearing Jams”, page 15)

The magazine slider is 7 defective. – Clean and lubricate the magazine slider 7 as required

and make sure that the magazine 8 is not dirty/soiled.

The spring of the magazine slider is too week or defective. – Contact an authorised service agent for Bosch power

tools.

Have the component replaced there.

The fasteners being used are not permitted. – Use only original accessories.

Only the fasteners (nails, staples, etc.) specified in ta-

ble “Technical Data” may be used.

The magazine 8 is empty. – Refill the magazine.

(See “Loading the Magazine”, page 14)

OBJ_BUCH-1037-005.book Page 15 Monday, November 10, 2014 12:55 PM

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Bosch GSN 90-34 DK Professional Manual

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