-11-
N70CB DRIVER MAINTENANCE INSTRUCTIONS
Worn driver causing poor quality or loss of power:
• Wear on the driving tip will affect the nail drive, giving symptoms of bent and incompletely driven
nails, and damaged nail heads.
• The driver length may be adjusted to allow the driving tip to be redressed to compensate for wear.
Heat and precise measurement are required. Contact a qualified service technician for this
adjustment.
• The length setting for a new driver is shown below. Measurement is from the bottom face of the
main piston.
• Note that the measurement from the top of the piston gives the maximum amount the driver may be
adjusted to allow redressing. Always extend the driver the minimum required to allow redressing to
restore the driving end; several redressings will be possible before this maximum depth is reached.
3/8" (9.5mm) maximum limit of driver recessed
into piston. Do not exceed this limit.
NOTE: WHEN DRESSING IS REQUIRED, USE
.015" - .025" x 45˚ CHAMFER
(.38 - .64mm x 45˚ CHAMFER)
SEE NOTE
6.000" – 6.020"
Standard Length N80CB/N80P
(152.4mm – 152.9mm)
NOTE: Driver wear of approximately 1/8” (3mm) can be tolerated in most applications.
However, in difficult driving applications, driver wear or approximately 1/16” (1.5mm) may
cause a slight reduction in the apparent driving power.
NOTE: For “Flush-Driving”, length settings shorter than shown above may be used. However,
the adjusted length should never be less than 5.331” (135.4mm), or more than 5.681”
(144.3mm), otherwise normal nailer function may be adversely affected.
ACCESSORIES AVAILABLE:
BC601
4 oz. Bostitch Air-Tool Lubricant
BC602
1 pint Bostitch Air-Tool Lubricant
BC603
1 pint Bostitch “Winter-Formula” Air-Tool Lubricant
BC604
1 quart Bostitch Air-Tool Lubricant
100679
O-Ring lube 1 lb. Can
SEQ5
Sequential Trip Conversion Kit
N80K2
Remote Control Kit
851325
Loctite 271 (.02 oz.)
851385
Loctite 242 (.02 oz.)
TVA6
Trigger Valve Assembly Kit
ORK11
O-Ring Kit
102476
Frame Protector Kit
TVA4
Quick Exhaust Remote
N70141
Collar
N50089
Hook, Dust Cover
CNTK2
Kit, Contact Trip Conversion (Black Trigger)
5.630 - 5.650”
Standard Length
(143mm - 143.5mm)
