Location Of The Jewels - Seiko 8R48A Technical Manual

PARTS CATALOGUE
● Location of the jewels
77 FORTH WHEEL
78 THIRD WHEEL
GEAR TRAIN
MECHANISM
84 ESCAPE WHEEL
81 CENTER WHEEL
66 2ND REDUCTION WHEEL
WINDING
70
MECHANISM
74 1ST REDUCTION WHEEL
12 INTERMEDIATE DATE WHEEL
22
23
25 HOUR COUNTING WHEEL
CHRONOGRAPH
UNIT
24 MINUTE COUNTING WHEEL
43 SECONDS COUNTING WHEEL
44 SECONDS WHEEL
47 CHRONOGRAPH WHEEL
60 BALANCE COMPLETE (WITH STUD)
63 PALLET FORK
BALANCE AND
ESCAPEMENT
CROWN WHEEL (Assembled to the
BARREL AND TRAIN WHEEL BRIDGE
MINUTE COUNTING 2ND
INTERMEDIATE WHEEL
MINUTE COUNTING 1ST
INTERMEDIATE WHEEL
ENTRY PALLET JEWEL
EXIT PALLET JEWEL
ROLLER JEWELS
TOTAL NUMBER OF JEWELS
Upper
Cap jewel Hole jewel
- ○
○ ○
○ ○
- ○
- ○
- ○
- ○
- ○
- ○
- ○
- -
- -
- -
- -
- ○
○ ○
- ○
11/24
Cal. 8R48A/8R49A
Lower
Cap jewel Hole jewel
- -
- ○
- ○
- ○
- ○
- -
- ○
- -
- ○
- ○
- ○
- ○
- -
- ○
- ○
○ ○
- ○
○
○
○
34 jewels