Porter-Cable 987 - Manual (Page 15)

15
A
A
B
B
Fig. 13 Fig. 14
CHUCK REPLACEMENT
Remove battery pack to prevent accidental start-up.
1. Open chuck jaws (A) Figs. 13 and 14 as wide as possible to gain access
to the chuck retaining screw (B) Fig. 13.
2. Remove chuck retaining screw (B) by turning it clockwise (left-hand
thread) with a hex wrench.
3. Use a 3/4" (19mm) wrench on nose of chuck (B) Fig. 14. Turn counter-
clockwise to remove.
4. To install new chuck, reverse the procedure.
ALTERNATE CHUCK REPLACEMENT
1. Open chuck jaws as wide as possible to gain access to the chuck
retaining screw.
2. Remove chuck retaining screw by turning it clockwise (left-hand thread)
with a hex wrench.
3. Place the two-speed gear shift selector to the rear (LOW) position.
4. Place the short end of a large hex wrench (1/4" or larger) into the chuck
(Fig. 15). Align wrench flats with chuck jaws and tighten chuck securely.
While supporting chuck on a solid surface, position hex wrench to left
(see Fig. 15) and strike wrench a sharp blow with a hammer to loosen
chuck. Turn chuck counterclockwise to remove.
5. Coat mounting face of the replacement chuck with anti-seize compound.
6. Thread chuck onto spindle by turning chuck clockwise. Hand tighten.
Install hex wrench in chuck. While supporting chuck on a solid surface,
position hex wrench to the right (see Fig. 16), and strike wrench a sharp
blow with a hammer to seat chuck onto spindle.
7. Remove hex wrench from chuck.
8. Install chuck retaining screw.
REMOVE INSTALL
Fig. 15 Fig. 16
Remove battery pack to prevent accidental start-up.
984-987 - manual - 905273- 04-08-03.qxd 4/8/03 9:41 AM Page 15